diff --git a/CHANGES.rst b/CHANGES.rst
index ad81651a..b6646adf 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,4 +1,13 @@
 
+Release 1.4.3
+=========================================
+
+* **BUGFIX:** Fixed edge case error when deserializing ``ChartOptions`` using ``.from_dict()``
+  with a ``dict`` that had been serialized using ``.to_dict()`` which errored on ``.margin`` 
+  and ``.spacing`` (#124).
+
+--------------------
+
 Release 1.4.2
 =========================================
 
diff --git a/highcharts_core/__version__.py b/highcharts_core/__version__.py
index 4b5bf2c5..241893a2 100644
--- a/highcharts_core/__version__.py
+++ b/highcharts_core/__version__.py
@@ -1 +1 @@
-__version__ = '1.4.2'
\ No newline at end of file
+__version__ = '1.4.3'
\ No newline at end of file
diff --git a/highcharts_core/options/chart/__init__.py b/highcharts_core/options/chart/__init__.py
index 519cf5a4..7c48bf27 100644
--- a/highcharts_core/options/chart/__init__.py
+++ b/highcharts_core/options/chart/__init__.py
@@ -592,10 +592,22 @@ def margin(self, value):
                                                   f'or an iterable of four values. '
                                                   f'Received an iterable of {len(value)} '
                                                   f'values ({value})')
-            self.margin_top = value[0]
-            self.margin_right = value[1]
-            self.margin_bottom = value[2]
-            self.margin_left = value[3]
+            if value[0] == 'null':
+                self.margin_top = None
+            else:
+                self.margin_top = value[0]
+            if value[1] == 'null':
+                self.margin_right = None
+            else:
+                self.margin_right = value[1]
+            if value[2] == 'null':
+                self.margin_bottom = None
+            else:
+                self.margin_bottom = value[2]
+            if value[3] == 'null':
+                self.margin_left = None
+            else:
+                self.margin_left = value[3]
         else:
             self.margin_top = value
             self.margin_right = value
@@ -620,7 +632,10 @@ def margin_bottom(self) -> Optional[int | float | Decimal]:
 
     @margin_bottom.setter
     def margin_bottom(self, value):
-        self._margin_bottom = validators.numeric(value, allow_empty = True)
+        if value is None or isinstance(value, constants.EnforcedNullType):
+            self._margin_bottom = None
+        else:
+            self._margin_bottom = validators.numeric(value)
 
     @property
     def margin_left(self) -> Optional[int | float | Decimal]:
@@ -640,7 +655,10 @@ def margin_left(self) -> Optional[int | float | Decimal]:
 
     @margin_left.setter
     def margin_left(self, value):
-        self._margin_left = validators.numeric(value, allow_empty = True)
+        if value is None or isinstance(value, constants.EnforcedNullType):
+            self._margin_left = None
+        else:
+            self._margin_left = validators.numeric(value)
 
     @property
     def margin_right(self) -> Optional[int | float | Decimal]:
@@ -660,7 +678,10 @@ def margin_right(self) -> Optional[int | float | Decimal]:
 
     @margin_right.setter
     def margin_right(self, value):
-        self._margin_right = validators.numeric(value, allow_empty = True)
+        if value is None or isinstance(value, constants.EnforcedNullType):
+            self._margin_right = None
+        else:
+            self._margin_right = validators.numeric(value)
 
     @property
     def margin_top(self) -> Optional[int | float | Decimal]:
@@ -680,7 +701,10 @@ def margin_top(self) -> Optional[int | float | Decimal]:
 
     @margin_top.setter
     def margin_top(self, value):
-        self._margin_top = validators.numeric(value, allow_empty = True)
+        if value is None or isinstance(value, constants.EnforcedNullType):
+            self._margin_top = None
+        else:
+            self._margin_top = validators.numeric(value)
 
     @property
     def number_formatter(self) -> Optional[CallbackFunction]:
@@ -1119,13 +1143,23 @@ def spacing(self, value):
                                                   f' or an iterable of four values. '
                                                   f'Received an iterable of {len(value)} '
                                                   f'values ({value})')
-            value = [validators.numeric(x) for x in value]
-            self.spacing_top = value[0]
-            self.spacing_right = value[1]
-            self.spacing_bottom = value[2]
-            self.spacing_left = value[3]
+            if value[0] == 'null':
+                self.spacing_top = None
+            else:
+                self.spacing_top = value[0]
+            if value[1] == 'null':
+                self.spacing_right = None
+            else:
+                self.spacing_right = value[1]
+            if value[2] == 'null':
+                self.spacing_bottom = None
+            else:
+                self.spacing_bottom = value[2]
+            if value[3] == 'null':
+                self.spacing_left = None
+            else:
+                self.spacing_left = value[3]
         else:
-            value = validators.numeric(value, allow_empty = False)
             self.spacing_top = value
             self.spacing_right = value
             self.spacing_bottom = value
diff --git a/tests/options/chart/test_chart.py b/tests/options/chart/test_chart.py
index bb876ef9..e939f817 100644
--- a/tests/options/chart/test_chart.py
+++ b/tests/options/chart/test_chart.py
@@ -177,3 +177,166 @@ def test_to_dict(kwargs, error):
 ])
 def test_from_js_literal(input_files, filename, as_file, error):
     Class_from_js_literal(cls, input_files, filename, as_file, error)
+
+
+@pytest.mark.parametrize('as_dict, as_js_literal, error', [
+    ({
+        'marginRight': 124
+    }, False, None),
+    ({
+        'type': 'bar',
+        'marginRight': 124,
+        'marginTop': 421,
+        'marginBottom': 321,
+        'marginLeft': 789,
+        'scrollablePlotArea': {
+            'minHeight': 1000,
+            'opacity': 1
+        }
+    }, False, None),
+
+    ({
+        'marginRight': 124
+    }, True, None),
+    ({
+        'type': 'bar',
+        'marginRight': 124,
+        'marginTop': 421,
+        'marginBottom': 321,
+        'marginLeft': 789,
+        'scrollablePlotArea': {
+            'minHeight': 1000,
+            'opacity': 1
+        }
+    }, True, None),
+])
+def test_bug124_margin_right(as_dict, as_js_literal, error):
+    if not error:
+        if not as_js_literal:
+            result = cls.from_dict(as_dict)
+        else:
+            as_str = str(as_dict)
+            result = cls.from_js_literal(as_str)
+        assert isinstance(result, cls) is True
+        if 'marginRight' in as_dict or 'margin_right' in as_dict:
+            assert result.margin_right == as_dict.get('marginRight', None)
+        if 'marginTop' in as_dict or 'margin_top' in as_dict:
+            assert result.margin_top == as_dict.get('marginTop', None)
+        if 'marginBottom' in as_dict or 'margin_bottom' in as_dict:
+            assert result.margin_bottom == as_dict.get('marginBottom', None)
+        if 'marginLeft' in as_dict or 'margin_left' in as_dict:
+            assert result.margin_left == as_dict.get('marginLeft', None)
+    else:
+        with pytest.raises(error):
+            if not as_js_literal:
+                result = cls.from_dict(as_dict)
+            else:
+                as_str = str(as_dict)
+                result = cls.from_js_literal(as_str)
+
+            
+@pytest.mark.parametrize('as_str, error', [
+    ("""{
+        marginRight: 124
+    }""", None),
+    ("""{type: 'bar',
+        marginRight: 124,
+        marginTop: 421,
+        marginBottom: 321,
+        marginLeft: 789,
+        scrollablePlotArea: {
+            minHeight: 1000,
+            opacity: 1
+        }
+    }""", None),
+
+    ("""{
+        marginRight: null
+    }""", None),
+])
+def test_bug124_margin_right_from_js_literal(as_str, error):
+    if not error:
+        result = cls.from_js_literal(as_str)
+        assert isinstance(result, cls) is True
+        if 'marginRight' in as_str or 'margin_right' in as_str:
+            if 'marginRight: null' not in as_str:
+                assert result.margin_right is not None
+            else:
+                assert result.margin_right is None
+        if 'marginTop' in as_str or 'margin_top' in as_str:
+            assert result.margin_top is not None
+        if 'marginBottom' in as_str or 'margin_bottom' in as_str:
+            assert result.margin_bottom is not None
+        if 'marginLeft' in as_str or 'margin_left' in as_str:
+            assert result.margin_left is not None
+    else:
+        with pytest.raises(error):
+            result = cls.from_js_literal(as_str)
+
+
+@pytest.mark.parametrize('as_dict, error', [
+    ({
+        'marginRight': 124
+    }, None),
+    ({
+        'type': 'bar',
+        'marginRight': 124,
+        'marginTop': 421,
+        'marginBottom': 321,
+        'marginLeft': 789,
+        'scrollablePlotArea': {
+            'minHeight': 1000,
+            'opacity': 1
+        }
+    }, None),
+
+])
+def test_bug124_margin_right_to_dict_from_dict(as_dict, error):
+    if not error:
+        initial_result = cls.from_dict(as_dict)
+        as_new_dict = initial_result.to_dict()
+        result = cls.from_dict(as_new_dict)
+        assert isinstance(result, cls) is True
+        assert result.margin_right == initial_result.margin_right
+        assert result.margin_top == initial_result.margin_top
+        assert result.margin_bottom == initial_result.margin_bottom
+        assert result.margin_left == initial_result.margin_left
+    else:
+        with pytest.raises(error):
+            initial_result = cls.from_dict(as_dict)
+            as_new_dict = initial_result.to_dict()
+            result = cls.from_dict(as_new_dict)
+
+
+@pytest.mark.parametrize('as_dict, error', [
+    ({
+        'spacingRight': 124
+    }, None),
+    ({
+        'type': 'bar',
+        'spacingRight': 124,
+        'spacingTop': 421,
+        'spacingBottom': 321,
+        'spacingLeft': 789,
+        'scrollablePlotArea': {
+            'minHeight': 1000,
+            'opacity': 1
+        }
+    }, None),
+
+])
+def test_bug124_spacing_right_to_dict_from_dict(as_dict, error):
+    if not error:
+        initial_result = cls.from_dict(as_dict)
+        as_new_dict = initial_result.to_dict()
+        result = cls.from_dict(as_new_dict)
+        assert isinstance(result, cls) is True
+        assert result.spacing_right == initial_result.spacing_right
+        assert result.spacing_top == initial_result.spacing_top
+        assert result.spacing_bottom == initial_result.spacing_bottom
+        assert result.spacing_left == initial_result.spacing_left
+    else:
+        with pytest.raises(error):
+            initial_result = cls.from_dict(as_dict)
+            as_new_dict = initial_result.to_dict()
+            result = cls.from_dict(as_new_dict)