This doesn’t really answer your question, but perhaps one from your own collection would be an option? Or, if there’s a brand that he associates with you, following that heritage would be nice.
My father gave me his old Fender Stratocaster on my 21st and I have more of a connection to that guitar than any of the others I own.
Failing the above, the Tudor Black Bay would make a nice present and is versatile enough to wear on different straps.
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