Help with dating a K Mag

[Magnum in Ms]

A friend of mine has acquired a nice green glass K Mag and I am trying to help him with the date of manufacture and make him a string. Also what is the brace height?  52" KU45381 50# Thanks for any help

 

[johnnyrazorhead]

My guess would be a 1971 model. Not sure on brace height, maybe around  8".

[Jack Shanks]

I can only add. If the Kodiak Magnum silkscreen is on the back 1971, belly 1972.