It has value. Old school hot rodder for sure.
I knew right away (before you stated it) that it was a marine unit. That was the go to distributor for Ford marine engines for a long time.
It is a YL series, search Mallory YL and you will find all the information you want about it. That has had a electronic conversion, that is reversable back to points if you like.
Mallory was absorbed by the Holley overlord.
That is probably 60's, maybe early 70s.
I have one as well, happens to be in a marine engine sitting in the garage.