Rare Spare???

[madwag]

Hey found this in a pile of tools in my shed on the weekend.
Dont know what its from, As they where my grandfathers tools im guessing it would be from either his Ford Customline, ZH Fairlane 500 or ZC or ZD i cant remember what exact model it was.

But yeah Is it worth anything to a collector wanting to finish off a factory tool kit or is it just with the value of the tool in its self haha cheers guys!!