Pretty Old I’d say Bob when it come to Bose Knives, Mid to late 80’s
You can tell from the larger pin in the middle next to the bolster and the nail nicks. The nicks are ground in with a cut off wheel instead of cut in with a mill. Also the flute in the bolster is an older style, I would guess the bolsters are nickel silver. Plus there weren’t many shields put in then. Love the knife