Certainly cheaper than buying a new/used Bargman 66 lock with key for $200, or whatever they are selling for these days. They may need a key blank though. I got mine from an ebay seller named rfurtado1. The kay is stamped HFD7 on one side and H5 125H on the other. It was for a '37 Plymouth or something.
The seller sent a me buisness card with the key, and the card has an email address, firstname.lastname@example.org so you might try going through him dorect, rather than his ebay store. As I recall, the key was around $6 plus $1 shipping or something like that. I thought it was a great deal.
Hope that helps,
JoeK '61 16' Airflyte
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