HOOKS for the Fly, By William E Schmidt
Mustad 3906: Nymph, Standard Wire, Standard Length, Turn-Down Eye, Spoat Bend, Bronze Finish.
Mustad 3906B: Nymph, 1-XH Wire, 1-XL Length, Turn-Down Eye, Sproat Bend, Bronze Finish.
Mustad 3399: Nymph, Standard Wire, Standard Length, Turn-Down Eye, Sproat Bend, Bronze Finsh.
Mustad 3399A: Nymph, Standard Wire, Standard Length, Turn-Down Eye (either undersized or needle eye, Spoat Bend, Bronze Finsh.
Parnelli
Other brands that are similar.
Mustad 3906: Daiichi 1550, Dai-Riki 075, Eagle Claw 1057, Gamkatsu L10-2H, Hayabua 373, Kamasan B175, Orvis 1641, Partridge G3A or J1A or CS7MW, Varuvas 98r, VMC 8526.
Mustad 3906B: Daiichi 1560, Dai-Riki 060 or 300, Damasan B170, Orvis 1671, Partridge SH2, VMC 8527.
Mustad 3399: Daiichi 2546, Gamakatsu S12S-1F or S10S or SS15, Orivs 9034, Partridge CS41 or CS51, VMC 9752.
Mustad 3399A: Same as the above lising for Mustad 3399.