{"product_id":"original-early-non-numbered-upper-tension-assembly-singer-221-featherweight-1933-1937-style","title":"Original Early Non-Numbered Upper Tension Assembly - Singer 221 Featherweight (1933–1937 Style)","description":"\u003ch3\u003eOriginal Early Non-Numbered Upper Tension Assembly for Singer 221 Featherweight\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStyle:\u003c\/strong\u003e Early Non-Numbered (1933–1937)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Original — complete assembly, excellent condition\u003c\/p\u003e\n\u003ch4\u003eAbout This Part\u003c\/h4\u003e\n\u003cp\u003eThis is a genuine original early non-numbered upper thread tension assembly for the Singer 221 Featherweight — the rarer of the two tension styles found on the Featherweight. This style was used on the earliest Featherweights produced from 1933 to 1937 and features no numerical markings on the adjustment knob. Tension is set by feel and stitch appearance rather than a numbered dial.\u003c\/p\u003e\n\u003cp\u003eUnlike the later numbered dial assembly (#45871), this early style uses a \u003cstrong\u003evisible exterior coiled tension spring\u003c\/strong\u003e and a simpler thumb nut design. The tension stud (post) on these early machines is also slightly different from later models.\u003c\/p\u003e\n\u003cp\u003eComplete original assemblies in excellent condition are increasingly rare and highly sought after by collectors and restorers looking to maintain historical accuracy on their early Featherweights.\u003c\/p\u003e\n\u003ch4\u003eDetails\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eOriginal part\u003c\/strong\u003e — not a reproduction\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eComplete assembly\u003c\/strong\u003e — all components present\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eExcellent condition\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eEarly non-numbered style\u003c\/strong\u003e — no dial markings; tension set by feel\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eExterior coiled tension spring\u003c\/strong\u003e — correct for 1933–1937 Featherweights\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eImportant Restoration Note\u003c\/h4\u003e\n\u003cp\u003eThis early non-numbered assembly is physically interchangeable with the later numbered dial style, but the tension stud (post) differs between the two styles. If you are restoring an early Featherweight for historical accuracy, this is the correct assembly. Most experts recommend retaining the original non-numbered unit on early machines for collector value.\u003c\/p\u003e\n\u003ch4\u003eCompatible Singer Models:\u003c\/h4\u003e\n\u003cp\u003eSinger 221 Featherweight (early production, 1933–1937 style)\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eGenuine original early non-numbered upper tension assembly for the Singer 221 Featherweight — complete, excellent condition, correct for 1933–1937 machines.\u003c\/em\u003e\u003c\/p\u003e","brand":"CMSS","offers":[{"title":"Default Title","offer_id":41233073078370,"sku":"VO1840","price":49.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/4681\/files\/center-Photoroom_6.jpg?v=1718378120","url":"https:\/\/www.vintagesingerparts.com\/products\/original-early-non-numbered-upper-tension-assembly-singer-221-featherweight-1933-1937-style","provider":"Central Michigan Sewing Supplies","version":"1.0","type":"link"}