I've bought an old racing bike with Shimano PD 1056 pedals installed and I am in need to buy cleats compatible with these. G****e search for "PD 1056 cleats" reveal SHIMANO SM-SH11 SPD-SL cleats, but I could not find the pedals in any compatibility list für these cleats.
Are these both compatible or is there a better suggestion?
Here are some photos of the pedals: