What string for my new old bow

[Longtoke]

Same thing I did once I decided I wanted to get serious about archery. Mine is nearly the same 49@28 two tone riser.  mine is a bit different though, unstained maple in front and green in the back, from what I have gathered my best guess is it is a 1976.

I think yours is a bit later, maybe like 1978, the mid 1970 grizzlies are hard to date. Either way a great bow!

[Longtoke]

It might have the real draw weight marked under the strike plate too!