I agree with Quiltncowgirl that 66's and 99's are not Featherweights. Many of the older Featherweights (pre 1956 or so) do not have the model number 221 on them. The free arm Featherweights (model 222) were only made for a couple of years and were never manufactured in the U.S.A. so that is why you have a even harder time finding them. Featherweights in my area show up fairly regularly on Kijiji (Canadian version of Craig's List) and have dropped in price from a high of about $500 a couple of years agao. Lately I have seen them listed between $150-$400 and they don't seem to be selling quite as quickly. My local used furniture/furnishings store has one sitting in their front window at $325 and it's been there for months.