The “Bose” SaddleHorn Pattern was first made in 1985. It was patterned after two old knives. The frame and clip blade are from an old dismantled 1902 W.R. Case & Son 62100 SaddleHorn (4 5/8" closed) and the potbelly blade was from Napanok SaddleHorn.

This pattern has evolved over the years and I guess with each new changes a No.0 was stamped on one of the blades...with that thought there must be something different about this knife....??? If I could see better pictures I think I could put a year on it (+/- 2 or 3 years).