I never really expected to find another example in that sort of condition, at what I'd consider to be a reasonable price. Generally speaking, quartz watches are held in low regard by watch snobs, even 15 jewel solid 18K gold luxury models, so dismissing Dorotheum as an exception, I never considered looking in more prestigious auction houses, like Sotheby's.
This morning, as I occasionally do, I made the fatal mistake of searching google images on 'Jean Lassale Thalassa'.
Seems I missed spotting another 18K Gold Jean Lassale Thalassa 7A74-011, auctioned by Sotheby's earlier this year.
It was Lot 87 of their
'Fine Watches including Masterworks of Time' sale, held in London on 14th April this year.

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Sotheby's estimate was a very conservative £700 - £1000 (likely due to the stigma of it being 'quartz'). It sold for a more respectable £3,780, including their premiums, but presumably subject to 20% VAT on top, making a total of £4,536.
https://www.sothebys.com/en/buy/auction ... watch-with

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Although no box or papers were included and Sotheby's condition report was less than flattering, based on the photos, to my eyes at least, that seemed a decent, well-cared for example, in the sort of condition I'm looking for. Had I seen the auction at the time, I most certainly would have bid on it. Though I'm not sure whether I'd have been willing to go so far as paying £4.5K for the privilege of ownership.
