Here's some of Joseph Bayer's work.
I'd say he was a step or 2 above journeyman status...
Most older engravers know the name well
His style looks like he paid close attention when seated next to Joe.

My scanned clippings aren't the best, but it gives an idea of his talent and quality.





His work was pictured in Guns Digest over the years in their Art of the Engraver section.