Old Ritchey Clipless MTB pedals. Have no clue about them. Any way to give them a service and test them if they work? I don't have MTB shoes but I'm thinking of
Ritchey Logic Clipless Pedals Vintage Dual Sided SPD MTB Mountain Bike | eBay
Sorted - Red Ritchey SPD pedals (VGC or NOS) | Retrobike