What does AK 14K gold mean?

It Is solid 14K gold! AK is the mark for Atasay Kuyumculuk, a leading jeweler from Turkey. You can put plated on packaging but there is no such thing as a stamp on jewelry for plated. Legally 14K, 18K, etc is the purity level of solid gold.

Don't rely on random people, including myself, for such important information! If you even have this anymore because of what they told you. Go to a jeweler site or a Maker's Mark site or some other specific site with experts!