Silver SRP322 ribbers were introduced to the market in 1972-1973 to match Studio mod. 321, Singer MemoMatic 321 and Silver SK321 standard-gauge 200-needle knitting machines. It looks identical to the Studio SRN321 (but might be a bit younger judging by more vintage weights of Studio SRN321 ribber), on which I wrote a very detail article. It is also similar to Silver Pile Rib Knitter.

Some machine knitters believe that Silver SRP322 is just rebranded Silver Reed SRP20, Singer SRP20 or Studio SRP20 ribbers, on which there are plenty of resources.

Stay tuned as I am researching all the details while enjoying the pictures below.