I'm not familar with Martin bows from that era, but if your bow follows true to form the first number in the serial number refers to the year of manufacture. And then knowing a lot of bows from way back when I'd say this thing could be from as early as 1976, a couple years after I started shooting compounds.
It could be from the 80's, but by then most bows were being made with cast aluminum or magnesium risers.
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Martin/Rytera Staff Shooter
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