The HeirloomID blog
Notes for owners, restorers and buyers
Practical, sourced guides to vintage Singer sewing machines: how to look after one, how to tell close relatives apart, and what to do when the records run out.
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More from the blog
Buying guide · 4 min read
Featherweight 221 vs 222K: how to tell them apart
The Singer 221 and the rarer Scottish 222K free-arm look almost identical. Here are the differences that matter: free arm, drop feed, serial prefixes, badges, cases and accessories.
Read the articleBuying guide · 5 min read
Singer 201 vs 15-91: two classic straight-stitchers compared
The Singer 201 and 15-91 are the two full-size straight-stitch Singers people argue about most. Compare their hooks, bobbins, motors, versions and what to check before you buy.
Read the articleDating · 4 min read
Can’t find your Singer serial number? Eight reasons, and what to do
Can’t find the serial number on your Singer, or the number won’t match any chart? The common reasons: wrong place, the motor number, worn letters, two numbers, missing records, and how to fix each.
Read the articleHave an old Singer in front of you?
Look up the serial number for the year and factory. It’s free and instant.