Acquiring this tuning fork based Speedsonic reminded me that I had an old piano tuning fork from my Dad stashed away somewhere. Well, I finally found it! I believe it's at least from the 60's...possibly earlier, making it older than the Speedsonic. Patina is generally appreciated on watches...dunno about piano tuning forks though! They sound great. Wish you could hear them...BOTH!
Looks like my wife’s (which she inherited from her long deceased grandmother). Although, this looks like a redial