@Marsimaxam : There’s a 105.012-66 CB with an incorrect HB caseback on eBay, the exact reverse of your issue:
https://www.ebay.com/itm/143631866057Purchases made through these links may earn this site a commission from the eBay Partner Network
I suppose you could buy it and have two correct watches.
edit: I take it back. My mistake. His caseback is a 145.012-67. Sorry.
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