Sterling Silver Signed‎ AK Ring Size 7 cut out

Sterling Silver Signed AK Faux Pearl Ring Size 7. I was surprised to see that it was signed AK (makers mark) and 8 (size) but no 925 or sterling mark. However, I did an acid test and it seems to be sterling. Please know that the size is stated to be a 8 on the band but it was a 7 on my mandrill (ring sizing tool).