Probably not, or at least they will not pay very much for it. 12 Kt is only 50% gold, and gold-filled means the item is made from a base metal (or maybe silver) and plated with the gold alloy.
There is a jewelry maker-Fairy Tale Jewelers-FTJ...10K means almost half the weight of the piece is gold.
The "10K" stamp on your gold ring indicates that it is made of 10 karat gold, meaning it is 41.7% pure gold. The "F" stamp likely stands for the manufacturer or the jeweler who made the ring. It is common for jewelers to include their initials or a logo on jewelry pieces to signify their brand or mark of authenticity.
The F-B-I- - 1965 Rope of Gold 2-21 was released on: USA: 12 February 1967
If the "A" is set at an angle, it is more likely not an A after all, but a G. Fredrick Goldman is a ring manufacturer that uses the "FG" jewelers mark. The F is vertical and the G is slanted or stylized.
I say $2000 I will buy coins also
Retail is $385.00 in the grade of F-12
Guymy f 28 k gold or fake
Retail values for this coin are: F-12 $800.00/ VF-20 $850.00/ EF-40 $920.00
Gold melts at approximately 1,948 degrees Fahrenheit.
Timothy F Garrard has written: 'Gold of Africa' -- subject(s): Catalogs, Gold jewelry, Gold, Goldwork
F. F. Latta has written: 'Black gold in the Joaquin'
No F mint marks, no gold in the coin and it's $1.00