I'll take some of that bet to Edge!!
From Joe's current Data Sheet:
Third Version, Integral Brass Spacer/Spring holder, 9 variations
Variation 1 (1967)6
Stamp: BUCK dot, Inverted, Left hand, 440C steel.
Butt rivets: Visible on left side of rear bolsters only.
Blade rivet: Visible on both sides of front bolsters.
Inlay rivets: 2 (tiny)
Rocker rivet: Brass, no head.
Sheath: Leather, black. A or B.
Packaging: 2 piece yellow box about 1 ½ high-(2), Guarantee Registration/Remember card with Federal Blvd. address-(1)(2 types seen), rice paper guarantee slip-(2), white tissue-(2), tips on care card-(2), knife sharpening card-(2).
Variation 2 (1967)7
Stamp: BUCK, Inverted, Left hand, 440C steel.
Butt rivets: 2 visible on left side of rear bolsters only.
Blade rivet: Visible on both sides of front bolsters.
Inlay rivets: 2 (tiny)
Rocker rivet: Brass, no head.
Sheath: Leather, black. A or B.
Packaging: 2 piece yellow box. **
Variation 3 (1967)8
Stamp: BUCK, u.s.a., Inverted, Left hand, 440C steel.
Butt rivets: 2 visible on left side of rear bolsters only.
Blade rivet: Visible on both sides of front bolsters.
Inlay rivets: 2 (tiny)
Rocker rivet: Brass, no head.
Sheath: Leather, black. B or C.
Packaging: 2 piece yellow box about 2 high-(1), about 1 ½ high-(1), Attention leaflet orange-(1), knife sharpening card-(1), Guarantee Registration/Remember card with Federal Blvd. address-(1)(2 types seen), Use and Care leaflet with Federal Blvd. address-(1), Navy exchng sales slip date 12/1/67, Al Buck note-(1).
Variation 4 (1968-1970)9
Stamp: BUCK, u.s.a., Inverted, Left hand, 440C steel.
Butt rivets: Visible on left side of rear bolsters only.
Blade rivet: Visible on both sides of front bolsters.
Inlay rivets: None.
Rocker rivet: Brass, no head.
Sheath: Leather, black. B or C.
Packaging: 2 piece yellow box about 2 high. **
Variation 5 (1968-1970)10
Stamp: BUCK, u.s.a., Inverted, Left hand, 440C steel.
Butt rivets: 3 visible on left side of rear bolster 1 visible on right side.
Blade rivet: Visible on both sides of front bolsters.
Inlay rivets: 2 (tiny)
Rocker rivet: Brass, no head.
Sheath: Leather, black. B or C.
Packaging: 2 piece yellow box about 2 high. **
Variation 6 (1968-1970)11
Stamp: BUCK, u.s.a., Inverted, Left hand, 440C steel.
Butt rivets: 1 visible on left side of rear bolster, 1 on right side.
Blade rivet: Visible on both sides of front bolsters.
Inlay rivets: 2 (tiny)
Rocker rivet: Brass, no head.
Sheath: Leather, black. B or C.
Packaging: 2 piece yellow box about 2 high. **
Variation 7 (1968-1970)12
Stamp: BUCK, u.s.a., Inverted, Left hand, 440C steel.
Butt rivets: 1 visible on left side of rear bolster, 1 on right side.
Blade rivet: Visible on both sides of front bolsters.
Inlay rivets: 2 standard sized.
Rocker rivet: Brass, no head.
Sheath: Leather, black. B or C.
Packaging: 2 piece yellow box about 2 high. **
Variation 8 (1968-1970)13
Stamp: BUCK, u.s.a., Inverted, Left hand, 440C steel.
Butt rivets: 2 visible on both sides of bolsters.
Blade rivet: Visible on both sides of front bolsters.
Inlay rivets: 2 (tiny)
Rocker rivet: Brass, maybe headed.
Sheath: Leather, black. B or C.
Packaging: 2 piece yellow box about 2 high. **
Variation 9 (1968-1970)14
Stamp: BUCK, u.s.a., Inverted, Right hand, 440C steel.
Blade/Butt rivets: Visible on both sides of bolsters, 2 rear, 1 front.
Inlay rivets: 2 (tiny)
Rocker rivet: Brass, maybe headed.
Sheath: Leather, black. B or C.
Packaging: 2 piece yellow box about 2 high-(1), Use and Care leaflet undated-(1), Attention leaflet orange-(1), **