I couldn't sell anyhing that was a gift much less a gift from my parents!
Well, I still have the Rolex Oyster I received from my parents in 1966. It's in semi-retirement now as Rolex don't supply spares for the 1210 calibre and while not my favourite watch, it's the last one I would ever sell.
I recall travelling to Bond Street in London to make my decision and a salesman at Watches of Switzerland telling me that IWC was better than Rolex (which it probably was then) and that at Asprey's the "cheapest" Patek Philippe was 150 GBP, exactly four times as much as the Rolex. As the second cheapest was 250 GBP, I suspect the first one must have been stainless steel, a rarity for Patek then and worth a fortune today, certainly more than the same watch in precious metal. I fulfilled the dream of a Patek over ten years ago before the prices went exospheric.
Just to throw some controversy into the conversation, I don't like quartz, which has no soul and neither like nor can afford complications. I can admire the ingenuity of a minute repeater or a perpetual calendar, but a wristwatch really only needs three hands. Winding a fine watch can be an aesthetic experience, but, unfortunately handwound watches are becoming a rarity. An automatic is fully wound after two or three hours of wearing but after that you are just feeding it with unnecessary energy, which is dissipated in friction and wear.
PS:- John, You don't happen to have a handwound Vacheron & Constantin among those? I passed on one from the 50s a few years ago for comparatively cheap €2500 and regret that today.