NOS from the 1930's locking gas cap and its 2 working keys.It will fit all Fords from 1932-40.Might also fit other vehicles.The dia of the disc on the back side is 1 3/4".It does closely resemble the Electroline locking gas caps but with cleaner lines.Would look great on the right car.MO,Check or PayPal okay.Shipping is included to any USA address. SOLD