Rare Tiny French Thermometer Of Love Charm
 
Completely darling french charm, dating around 1910, designed as a thermometer of love - AMITIE, AMOUR and PASSION are the degrees of hotness. The little enamel heart is set on AMOUR - love.
 
measures about 20mm tall 
 
marked - Depose which means patented
 
weight 0.9g
 
(apologies for the price, it was really expensive)