It was pinned to a small item alright, maybe a miniature version of a piece of machinery. If you could figure out what the item is surrounding the letters that would be helpful, it could be a bean pump sprayer.Being that small it could have been the start of a promo item for customers or award for employees,tie clip-key chain ect.
Lots of companys used to do things like that.
Just my guess.
What you are calling a casting sprue looks like a 3 cylinder exhaust manifold and the fMC logo is simulating being a motor. As far what it is for? That's the million dollar question. Good luck.Can anyone tell me what these are for ?
They are cast brass still on the casting sprue and have mounting pins on the back.