Vintage Amston No. 144 Crystal Coaster with Sterling Silver Rim

Description

Vintage Amston No. 144 Crystal Coaster with Sterling Silver Rim
In 1993, I got this coaster from my late grandmother's apartment.
A magnet does not adhere to the silver metal rim that is marked "Amston STERLING 144."
It is in
very good condition with mild tarnish and a few very light glass scratches
Approximate measurements:
Diameter of top: 3 7/8 in
Diameter of inner bottom: 2 3/4 inches
Weight: 5.6 ounces
To be shipped USPS First Class.
I combine shipping.  You can request an invoice.  Or, if you pay shipping charges before I buy a shipping label, I will send a message with a plan for the service and package type and how to refund the savings.
Thank you for looking.
Internet search:
AMSTON SILVER CO INC - Meriden, CT
out of business c. 1960