Comments for 1/20 12KGF and then an "H" in an elongated diamond

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starstarstarstarstar 		Walter E. Hayward & Co. H in a Diamond Lozenge
by: Yvonne

Maharba,

Thanks for reaching out, so glad you found us!

To break down the marks on your gold-filled vintage Brooch:

1/20 - is the ratio representing the weight of the gold layer to the total item weight.
12K - is the purity of the gold layer. 12K means the bonded layer is 50% pure gold and 50% other metal alloys.
GF stands for "Gold-Filled"

"H" in a Diamond is the makers trademark.
This is the trademark associated with Walter E. Hayward & Co.
well-known jewelry manufacturer of vintage costume Jewelry and fine Jewelry who was based in Attleboro, Massachusetts, US.

With care,
Yvonne
The Vaulted Shelf

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