Mikimoto 4.5 mm buying pearl earrings

Product Name: Mikimoto 4.5 mm buying pearl earrings
Authentic Mikimoto buying. 4.5 mm Akoya pearl & 18 k yellow gold classic stud earrings. (The tag has a number ‘4.0' but not sure if that indicates the size. My purchase order says 4.5 mm and these also measure 4.5 mm) Bought about 3 years ago but never used. The pearls have a lovely subtle pink shine. Very high quality and very elegant. There are logos on the stud stem as well as the back piece. The letters are really small. It is not possible to take a photo of. There was a box but I no longer have it (thought I will keep these forever so didn't care to keep the box. Didn't keep it when I move home.).