get a hold of A&L 860 693 0112 I think Al`s boy is still running the business have him mumber a blank key and send it to you then take it to a lock smith and have them duplicate the cut on the one you have
From 1928 until mid 1930 on the original the number was stamped on the round nickel bezel and could be seen.
It is hidden behind the dash if the number is on the key switch housing. (mid 1930 until end).
My suggestion is to contact the "Key Guy", Cal Allen, Chandler, AZ 480-892-0456. Cal has been around the hobby for many years and is expert in everything pertaining to Model A keys and locks. He is also a nice fellow to do business with.
From 1928 until mid 1930 on the original the number was stamped on the round nickel bezel and could be seen.
It is hidden behind the dash if the number is on the key switch housing. (mid 1930 until end).
Here ia a picture of the 1928-early 1930. The handle on the key is correct for 1930-1931, but it fits this lock and is what came with it when I bought it at the swap meet.