Royal armoured corps : weapons : Valentine tank (infantry tank mark III) afv Valentine, infantry tank Mk III / by B.T. White Maintenance Manual for the Ordnance, Q.F. 25 Ponder, Mark II and III on Carriage 25 Ponder, Mark I and Mounting Self-Propelled 25 Ponder, C, Mark … Notes on Drill and Equipment for 17 Ponder mark 2 Gun on Valentine (Carrier) 17 Ponder Mark 1.