HCT is the maker of the jewelry
Early Swarovski Jewelry was marked SAL
peanut butter
Platinum
Company name.
"S26" is likely a marking that indicates the type of material used in the jewelry piece, such as sterling silver with a purity of 92.5%. It is a common marking on jewelry to signify the composition of the metal used.
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375 is the marking for 9 carat gold. Usually vintage European will have this marking.
The 220 hallmark on jewelry means it is a commercial bronze alloy.
The 833 marking on gold signifies that it is 833 parts pure out of 1000. Translated to karats this would be 20kt, a popular purity used in Portuguese jewelry.
VCLM jewelry is vintage pieces of costume jewelry with a specific marking of "VCLM." They are created by the vintage jewelry company VCLM.
LPC stands for: Looks Personality Closeness