The 43cvl is well confirmed with additional WaA519 stamp on blade, the bayonet unfortunally was reworked by someone as normally it should have wood grips in that range, same as locking nut is replacement and the press button is a pre 1940 with WaA253 on it, the overall finish remains on phosphate so i assume someone removed weak blueing chemically by acid phosphoricus, which done a grey finish, and someone even lightly sharpened the blade, the plus WaA519 and matching is good, but the refurbishment decrease a little the value.Frog looks ok to me.