What actually prompted me to update this thread was the sight of a couple of new listings for NOS Carrera 515's. They were listed last night by US eBay seller
izeldor (a.k.a thewatchfactory.com), with the same Buy-it-Now price of $275.
Firstly, the relatively common stainless 'reverse panda' 515.11 (of which I have two already).
https://www.ebay.co.uk/itm/Genuine-Carr ... 5722826439

- Carrera-7Axx-Clone-515.11-Stainless-ReversePanda-eBay-Jan2023-Listing.jpg (160.73 KiB) Viewed 2593 times

- Carrera-7Axx-Clone-515.11-Stainless-ReversePanda-eBay-Jan2023-1.jpg (151.92 KiB) Viewed 2589 times

- Carrera-7Axx-Clone-515.11-Stainless-ReversePanda-eBay-Jan2023-2.jpg (120.17 KiB) Viewed 2589 times

- rsz_carrera-7axx-clone-51511-stainless-reversepanda-ebay-jan2023-7.jpg (238.57 KiB) Viewed 2589 times

- rsz_carrera-7axx-clone-51511-stainless-reversepanda-ebay-jan2023-9.jpg (224.76 KiB) Viewed 2589 times
Then an attractive if slightly blingy gold-tone 515.15 on a leather strap (which serves to tone it down somewhat).
https://www.ebay.co.uk/itm/Genuine-Carr ... 5560698270

- Carrera-7Axx-Clone-515.15-Gold-WhiteFace-LeatherStrap-eBay-Jan2023-Listing.jpg (161.93 KiB) Viewed 2593 times

- Carrera-7Axx-Clone-515.15-Gold-WhiteFace-LeatherStrap-eBay-Jan2023-1.jpg (144.37 KiB) Viewed 2589 times

- Carrera-7Axx-Clone-515.15-Gold-WhiteFace-LeatherStrap-eBay-Jan2023-2.jpg (132.08 KiB) Viewed 2589 times

- rsz_carrera-7axx-clone-51515-gold-whiteface-leatherstrap-ebay-jan2023-3.jpg (226.19 KiB) Viewed 2589 times

- rsz_carrera-7axx-clone-51515-gold-whiteface-leatherstrap-ebay-jan2023-7.jpg (237.03 KiB) Viewed 2589 times
It should be noted that these watches are currently not running, in need of replacement batteries - per the seller's description and from lack of movement of their hands in various photos. I had to chuckle at how the seller,
izeldor, a.k.a. Dory Farash was trying to promote these as high quality Swiss Made watches in his fanciful description, yet is selling them at a third of their 1990's retail prices ($860 and $775).

The gold-tone 515.15 doesn't actually have
'SWISS MADE' or
'SWISS' printed at the bottom of the dial.