Why do penny loafers have a slot for a coin?

This product is currently out of stock Dune London Strikes 1 Smart Penny Loafers

Buy from $: Bordeaux red calf leather patent finish penny slot slip-on style round toe branded leather insole flat rubber sole

penny slot machine tips Description penny-slot leather loafers Highlights - Jet black - Calf leather - Smooth grain - Penny slot - Signature numbers motif

penny slot machines free slots penny loafers, popular at the time, , or else low moccasin-type loafers