Customs 1949 Mercury/Lincoln keys

Can anyone tell me how many different keys are needed for a 49 9EL or baby Lincoln. ignition, doors, trunk and gas door, same as 49 Merc. I believe.
Thanks, Tom

 

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One million......having about that many in stock from wrecking yards I acquired dating back to the 50's - I've never found a match for my pre 1948 steering columns.....Chevy on the other hand....uses them over and over........

 

btt