Dating numbers blog

Graham Forsdyke worked with the Singer Company directly to remove some of the errors and fix the anomalies in the old chart records, but some have still been found, especially in the post-ET serial number sequences.Sometimes you might find a rogue 221, for example, in a batch of 50,000 99K machines.

Vintage costume jewelry usually doesn’t have purity marks, but will often have a maker’s mark (commonly called the signature), and can sometimes have a retailer mark and/or patent or inventory marks.

Click here for our "Birthdate Machines" chart indicating level of difficulty to find certain years.

Maybe you’ve just acquired some vintage jewelry from a family member or friend.

I often get requests from people asking for help with vintage jewelry they’ve acquired.

Because it’s not possible to have a comprehensive discussion of how to identify and date vintage jewelry in a single article, this article is the first in a series, and will specifically address vintage jewelry marks.

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