22 stamped inside the band of ring from Germany by: Yvonne
Maharba,
Thanks for reaching out Bob, I am so happy you found us!
The number 22 stamped inside of the band (the shank or bezel) probably indicates the circumference or internal diameter of this ring, rather than the gold composition , so the number 22 would indicate an internal circumference of 22 mm or a US Size 12 ¾.
If your ring from Germany was comprised of 22-karat gold, the traditional European hallmark stamp would be "916" (or "917"), while German stamps use a three-digit fineness like "333" (8K), "585" (14K), or "750" (18K).