The same thing happend to vintage Porsches not so long ago.
When I left the military in 1975, I drove by a used car lot in Southern California. There sat a lovely 356 Speedster, black on black, nicely restored.
$5500 cash would have purchased her....sadly it is now but a fond memory....
And yes, the good quality vintage submariner has gone the same route. Some of it is inflation, but the other is spurned on by people with more money than us and need a place to park it...
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As I've grown older, I've learned that pleasing everyone is impossible, but pissing off everyone is a piece of cake.