Vintage/Antique Oral Thermometer with mother of Pearl Case/ year used - 1850'-1901

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Posted by gsjones01
11 years ago
AI Appraisal
💬 3 Comments 🗣️ Discuss with Community
Description

Mid to Late 1800's oral thermometer with Mother of Pearl Case. Inscriptions (unknown) on thermometer and engraved "pat applied for"
Category Other
Medium copper/brass....mother of pearl/abalone
Distinguishing marks Dr's initials engraved ~ pat applied for (also engraved) Numbers and letters marked on thermometer
Condition Good
Size and dimensions of this item 6 inches long
Date Period mid 1800's - late 1800's
History This was my great grandfather's thermometer in the mid to late 1800's
Price Paid (If known) my great grandfather's
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Submitted by gsjones01

I have looked over and over again ....with a magnifying glass....can't find any indication of it being gold....I also have one of those kits (gold/silver testing) and it didn't come up 'positive'....I don't know how accurate they are.?  I guess a jeweler would be able to tell? 

Submitted by superking

The acid test is pretty definitive if you know how to use it properly, but you can sometimes get false negatives on lower karat gold depending on what other metals it's alloyed with. A jeweler would be able to tell for sure one way or the other.
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