This was in a box of parts when I purchased my '50 3100 truck just wondering if it actually ever belonged to he truck or just ended up in the parts box

here is a pic of one I saw on ebay just like it

https://www.dropbox.com/s/j4tarbkfvf2s01u/%24_12.JPG?dl=0


it says it is for a 49-50 but it doesn't look like the repo you can order for a 1950

THanks


1953 3100