4. The apparent age of the engraving as contrasted with the rest of the item. Which is sometimes hidden by paint. But not always, with on some items having a form of camouflage applied by brightening everything to match.

Originally Posted By: Redbaron
............... that it was done by an amateur with no access to jewelers/engravers tools. This may explain the atypical hammer-punch method.......... Best, Red

It looks like hammer and punch by an unskilled amateur to me. One hand holds the punch, and the other the hammer .......... tap ......... tap ........... tap ........... FP