Looks hand cut,,but done with an air assist power tool.
I only say 'but' to place it apart from hand work dome with a hammer & chisel. I still consider both to be hand engraving.
Hammer & chisel work (chasing) is the classic way of doing the work. Air assisted tools came around in a big way around the mid 70's and have really taken hold.
I don't see evidence of the laser cut engraving that is starting to become popular now. The cuts are clean and even,,though some of the Laser stuff is getting very good.
It wouldn't make much sense to hand cut a master to use as a patter used to copy from in the Laser engraving process unless you were making a bunch of these anyway.
That's the way they used to run,,maybe it's different now
The background is single dot punch work. Shading is single line and very simple,,with minimal lines and work.
The scroll work itself while near full coverage goes about achieving that with but a couple scrolls in total.
'American Scroll Work' would likely be a tag assigned to this style because of that latter trait. With more detail within
and coming off of the scroll itself it can be very effective. More than a few famous engravers used a form of it.
I'd guess,,and only a guess,,that the work was done outside the TC factory as an aftermarket job.
I can't think of anyone that engraved for the factory directly but there certainly may have.
