Ducoil ID help needed....Caddy?

I have a Ducoil and I belive it's a caddy but the numbers are a bit off, the tag is D22DB does anybody have an old book with this number. I'm thinking 54 and up caddy but am not 100% sure. I'm not sure what the B is.

 

Found it on Werksman's/Fox Valley Hot Rods website......

1954-62 (all) CCW D22D Cadillac

The B is for a Superstock curve setting

(B) SUPERSTOCK CURVE (20°) starts @ 1,000 ends @ 2,700 RPM. Recommended initial timing lead of 15°-20° and top end of 35°-40°.

 

I've got the exact same distributor in my coupe...

it RULES.