Numbers would be great to identify. However, tyre size 4.00 x 3 1/2 was used on a wide range of aircraft, including Anson. 4.95 x 3 1/2 was used on Proctor and many many others.Hubs however look a bit 1950s and may have been manufactured for use in gliders. 4.00 x 3 1/2 was main wheel for Slingsby Cadet/Tutor/Tandem Tutor/Prefect/Sky and many others. 4.95 x 3 1/2 is the mainwheel of most marks of Skylark I believe, and should be others too.