Strap and buckle look fake. They are identical to the Indian ones sold on ebay for around £10, Bovine leather patterned to look like Croc. Back looks genuine. If the watch is right and it might well be, it is from the 1980s at a guess. Not massively desirable or valuable to the collector community IMO. Price isn't extortionate but it would fetch more like €200/$250 on ebay I would guess.