There were engravers and engravers .Some were true artists others did the job to the price paid .
Look at the work of Henry Morris a Birmingham engraver who ran an engraving shop after WW1. Morris had numerous men working for him and trained many apprentices .Some of his work was as good as any I have seen especially his very fine detailed work.I do know that he trained at either Scott's or possibly Webley prior to the amalgamation and took on his last apprentice in 1959 and worked on until the 60's .