I really do like the look of naturally worn instruments and in the meantime I love brand new shining basses. What a dilemma when it comes to choose one would you say ? Not at all, just play both and pick up the best sounding one and the most ergonomic too. And it won't be the worn one as you would bet even if they are history pieces for sure, most of the time they are just dull sounding. If you don't believe me, try to make the blind test that we've all been through, you'll be surprised by your favourite instrument under these conditions. This test has also been conducted many times with the famous Stradivarius compared to modern designed violins, and even the best players acknowledge that the Stradivarius sounded dull, lacking huge harmonic content, compared to a modern violin crafted by a real master luthier. Sad but true.
I've sold all my vintage instruments (and I've owned a lot) when I decided to listen with my ears and not my eyes, or even worst my emotions, and I don't even mention the retail value syndrome here. That said if I had a ridiculous amount of money to throw away, I would buy one of these history pieces, just to hang it on the wall as it's a beautiful work of art when correctly worn...
Won't make friends, I know. 😉