OK, finally got some information on these arrows. Also posted this on collectors forum.
Bear X300 serial# 99975
Length; 28"
Dia; 11/32"
Weight; 330gr
Spine; 4 1/2-5
Fletch; Hen feathers yellow and white, cock feather black and white.
Nock; Blue plastic
Cresting; white base, black black yellow black black blue black, repeated.
Heads; 1 doz field points, 1 doz green razorheads with bleeders. envelope with tool for bleeders and instructions.
Also contains small flyer with picture of Fred with a black bear and an advertisement for Razorheads, dated 1958.
Box and arrows are in excelent condition and he says may never have been used.
Any insight would be greatly appreciated.