The drilling and overall construction of every Lee pipe I’ve seen is perfect.Maybe that was because most pipe makers low end pipes still did what they were designed to do? How's the drilling on the stem?
Whenever the last Lee was made, it was as good a smoker as the first one was in 1946.
Lee used close grained, high grade briar throughout production, first to last. They aren’t flashy, few knockout beautiful Lee pipes were ever made, but no junkers.
There was a switch from 7 pointed inlaid gold stars to 5 pointed, maybe about 1950, but I’m convinced Lee regarded it as an improvement. Stems seem higher polished on 5 point star era pipes, briar quality a tiny bit better. I call those middle run Lees, and believe they are the best.
Then you’ll find middle run quality Lee Star grades with stamped stars, no other changes.
Until then, I think all Lee Star grades used hand cut (or cut by an extremely cleverly set up machine) vulcanite stems.
Then you’ll find stamped stars with the cheaper Briarlee type mortise, and Briarlee grade stems, probably moulded. Some of those have the stars stamped on the shank, instead of the stem.
About then, a soft varnish or shellac was used to cut costs.
At the end, you’ll find obvious fills under a soft varnish or shellac, and push stems.
I’ve seen hard varnished Brairlees marked Made in Italy, but I don’t want any. They are Lees in name only.