diff --git a/lib/FusionInventory/Agent/Task/Inventory/Input/Generic/Screen.pm b/lib/FusionInventory/Agent/Task/Inventory/Input/Generic/Screen.pm
index ad93d1d484..aa51319ede 100644
--- a/lib/FusionInventory/Agent/Task/Inventory/Input/Generic/Screen.pm
+++ b/lib/FusionInventory/Agent/Task/Inventory/Input/Generic/Screen.pm
@@ -167,6 +167,20 @@ sub _getEdidInfo {
             substr($edid->{serial_number2}->[0], 0, 8) .
             sprintf("%08x", $edid->{serial_number})    .
             substr($edid->{serial_number2}->[0], 8, 4) ;
+    } elsif (
+        $edid->{EISA_ID} &&
+        $edid->{EISA_ID} eq 'GSM4b21'
+    ) {
+        # split serial in two parts
+        my ($high, $low) = $edid->{serial_number} =~ /(\d+) (\d\d\d)$/x;
+
+        # translate the first part using a custom alphabet
+        my @alphabet = split(//, "0123456789ABCDEFGHJKLMNPQRSTUVWXYZ");
+        my $base     = scalar @alphabet;
+
+        $info->{SERIAL} =
+            $alphabet[$high / $base] . $alphabet[$high % $base] .
+            $low;
     } else {
         $info->{SERIAL} = $edid->{serial_number2} ?
             $edid->{serial_number2}->[0]           :
diff --git a/t/inventory/generic/screen.t b/t/inventory/generic/screen.t
index dd11c451c7..bd97fdc39a 100755
--- a/t/inventory/generic/screen.t
+++ b/t/inventory/generic/screen.t
@@ -296,6 +296,18 @@ my %tests = (
         SERIAL       => '11004M0C00313',
         DESCRIPTION  => '49/2010'
     },
+    'lcd.lg-l1960.1' => {
+        MANUFACTURER => 'LG Electronics Inc. (GoldStar Technology, Inc.)',
+        CAPTION      => 'L1960TR ',
+        SERIAL       => '9Y670',
+        DESCRIPTION  => '11/2007'
+    },
+    'lcd.lg-l1960.2' => {
+        MANUFACTURER => 'LG Electronics Inc. (GoldStar Technology, Inc.)',
+        CAPTION      => 'L1960TR ',
+        SERIAL       => '9Y676',
+        DESCRIPTION  => '11/2007'
+    },
     'lcd.lenovo-3000-v100' => {
         MANUFACTURER => 'AU Optronics',
         CAPTION      => undef,