Production dates for the Colt were 1959-1973(I believe).The early Colts had semi-working recurve limbs and the later ones were full-working limbs.If your bow has white glass,it' s probably under 40#--black glass is 40-45#.Monetary value?-probably not worth a heckuva lot.I have an old Bear(about 35yrs old)that has some spider webbing and I shoot it occassionally but without seeing the actual condition of yours,it' s hard to say if it' s safe.Nice looking bows,though.Sorry I couldn' t help out more.