One single collector from New-York , two Patek Philippe Minute Repeaters , both featuring elements designed to make the watch easier to handle and read: oversized trigger (and crown for one of them) and blackened hands and numerals : The ref. 2419 was pro...
...but on these older watches they clearly didn't have jigs or anything to provide perfect placement. The holes were probably eye-balled and hand drilled : )
to Christie’s lot 2508 and scroll through the photos, you’ll find a short video: https://www.christies.com/en/lot/lot-6347332?ldp_breadcrumb=back There’s also a short video here: https://www.hodinkee.com/articles/changing-history-a-previously-undocumented...