Omega ‘Constellation’ Ref. ST 168.00 in steel, with the Omega automatic Cal. 561. Serial number #2447xxxx places its production in 1966. It is wearing a handmade genuine croc strap in dark blue.
As with all the watches that I handle at Localtime, the BIN prices includes a 6-month written warrantee from the date of purchase. Feel free to ask me whatever clarifications you might need.
EXTRA! Check out my own Localtime straps: Handmade from premium calf leather to my own specifications in Italy, they come in 5 sizes [lug width/buckle width]: 18/16, 19/16, 20/16, 21/18 and 22/18mm & 8 colours: tan, brown, dark brown, black, cinnamon brown, olive green, denim blue and grey blue. I sell these separately in my eBay store under eBay item number 401105271426 and you can also see them in the last photo here.