Help decoding paint number in 1951 Buick Special Two Door Deluxe

[carola25]

I got stuck with the identification of the paint number of our Buick 1951 Special Deluxe. It reads I ABD, probably meaning 1 ABD, as I was used for 1.
If "1" stands for the paint number 01, this would mean it's Carlsbad Black. But I can't get the meaning of ABD. Can anyone help me?

 

[Buford26]

Those are probably option (accessory) codes. They were supposed to be stamped next to "ACC", but usually aren't.

A = Dynaflow transmission
B = Heater and defroster
D = Radio and antenna

 

[carola25]

Dear Buford 26, yes, there are a Dynaflow, Heater/Defroster and a Radio/Antenna in the car! Many thanks for your help! with best wishes for joyful summer rides, Carola25.