In the January 1992 edition of the Antique Outboarder, Tom Manley wrote about how to replace the original lock cylinder with a modern part. Chances are that even if you had the key, the lock might be seized up anyway. But I guess maybe a locksmith could always make you a key that would fit.
PM T2
He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...