Looking at this chart, http://wiki.badgerandblade.com/US_Gillette_Dating_Information, where is the "Gillette Adjustable Slim Black Beauty Short Handle"? Seller listed it as "Gillette Adjustable Slim Black Beauty Short Handle R3". It has a R3 (1971) date code. I bought one and was wanting to cross reference it on the chart. Is it simply listed as http://wiki.badgerandblade.com/Gillette_Super_Adjustable ?