I beleve what you have there is a mixed hodge podge. Those two on the right with single airline and bulkhead mounts I am pretty sure are Springair mains that would be used in the wing P-38 and B-26 and are not compatable with that third one.

Correction after a closer look what you have on the right are two Springair nose wheels and that third one with the surface mount is a main gear of some other gear.