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
For Sale?
No
Photos
Re: Vintage/Antique Oral Thermometer with mother of Pearl...
A very nice piece. Are you sure that's brass? If you look closely you may find hallmarks indicating that its actually gold...
Re: Vintage/Antique Oral Thermometer with mother of Pearl...
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?
Re: Vintage/Antique Oral Thermometer with mother of Pearl...
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.