Fun fact (kind of): The 3.5" floppies I ended up copying the English language OS/2 installer and system files to had factory labels designating them as Windows NT install disks. All three were error free, so thanks for choosing good quality media, Microsoft of the 1990s.
(Though two of them two of them had manual notes, and it seems I used them as OpenBSD 3.2 and 3.3 boot disks at some point.)