Evocative Combination, Set of Six Punched Type Old Brass (Factory?) Key Fobs with Keys

I love these, found at a flea market in Lancaster Pounty PA. It was the "paint locker" fob that sold me, but I couldn't resist buying all of them, and always love very specific keys that have lost their contexts. I'm guessing maybe these belonged to an auto shop, probably in an agricultural area, where tow moter [sic], Hyster (forklift) and hydraulic pump keys would be frequently used.

Each fob approx 3" x 2". Sold as a set. All in good condition, nice patinas to the brass.