Did manufacturers ever supply quarter-sized trade checks (with a hole).
My Mills FOK Vender has all the trade check mechanisms in place, including the note on the instructions that "trade checks cannot be used to vend mints."
Even though all trade check stuff is in the machine, it seems to cycle quarters normally, with the quarters going to the coin tube (which is fine with me, I'd rather feed it quarters and get quarters back).
But I was just curious about if there was ever quarter-sized trade checks, cause I've never seen any.