Hello rayray,
I have just added model identification to the record
HERE. It is quite possible that your machine is completely original, but information
is lacking on the later years of production. Best guess is that these machines were
in production till about
1977.
The instructions I have included on the Model 17 page are totally suitable to your
machine, as there was little change over almost two decades - testament to its design.
Hope this helps.-------------------------------
JACK.
