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 MTB WCS XC/V5 Pedals, Silver | Bikeinn
Pair of Ritchey WCS Carbon Echelon Pedals | Alltricks.com
Ritchey MTB SPD pedals, black, good condition | eBay