rb,
Best is if you search here around for "option codes2 and "data plates".
Your plate belongs onto the top of the bracket that holds the relais and the latch of the engine hood on inner left fenderin the engine bay .
426 = 42/6 power steering and automatic transmission
491 = 49/1 US version
503 = 50/3 left rearview mirror mounted
181 H 181 H: body and hardtop color = light beige, Herberts was the supplier (
6: car came with softtop and hardtop mounted
113044: 280 SL chassis
12: left hand drive and automatic
7: US (or Canada) delivery
00153: production number
81107: body number.
Hopefully I didn't mix anything up here. I recalled everything from my poor memories.
Klaus Drexl is our data card and metal plate deciphering expert.
Have you already ordered your data card from the Mercedes-Benz Classic center?
Best,
Achim
(Magdeburg, Germany)