Found this in back seat
 

Found a piece of paper in the lower back seat today glued to the jute backing. It reads 13637 791
451 B22-D55
M20

It was hand written, I know the build sheet for my car was put on top top of the gas tank for a Van Nuys built car.

D55 is center console
791 is Ivory interior
B22 is SS door emblems

I see you found out what B22 is. Do you have a build sheet for the car? This is not a replacement for one but is an interesting find.

These cars are amazing. I want to buy a an old un-restored car just to look for treasures...

Buy mine! No treasures but it's interesting to see what stupid things have been done to it over the years.

Figured out the 451 is A51 for Bucket seats

I found a $10 bill once in a wreaked 1965 Mustang at a junk yard when I was looking for rear seatbelts. I still have that $10 since it's a silver certificate dated 1957 and is in near mint condition. The nice thing was the seatbelts only cost me a dollar so I made nine bucks that day. I wonder what other things people have found in cars when looking for parts.