The 1983M was listed in catalogs from 1955 to 1962. You can usually get a good idea of value from doing a "completed auctions" search on ebay but I guess this model is not as common as the 1993. Lawson's guide lists them around $35.
cool-thumb USA my factory repair manual list them on one page however the 1983M has different parts #s, send me a self addresed stamped business size envelope ,I will send you back a copy of he repair page! as fo value? Brian is corect also Condition is everthing! Our adddres ie( E-Z Action Products Co 759 Terra Lane Amherst Ohio 44001-1116-07 ) atten Milt or Ryan ! Your Ohio Conection On Lake Erie Col. M. lorens aka SWIM JIG