Help ID this Transmission adpator PLEASE

I have had this hanging on my shop wall for a few years and no one seems to know what it is there are no marks or anything on this. I pretty sure it bolts to a 3 speed toploader tranny. but other then I do not know anything about

 

My first guess would be '54-'64 Ford Y block to flathead transmission.

 

Ive got one for a y block ill compare it in the morning, looks close

 

Nothing other than a Ford engine uses that can shaped starter drive cover.

 

hogshead bellhousing for flathead of some sort. Not original looking to me, though.