Besides thebrand name & size & shape number, there is no other stamping on the shank, not even a country designation. 5is one of the few available that I saw when looking for a price comparison.
I looked pretty carefully, with a lens, and I did not see any fillsin this wood...sure, a couple of pits, but no fills were visible to my eyes. The draw is wide-open and a cleaner floats through.
Pack the pipe properly, getting the tightness of the tobacco even, allowing for tobacco expansion if need be (refer to shag-cut tobaccos above).
Some tobaccos need to be packed in a bit tighter to get the correct draw, try different packing techniques until you find the one that works best for your pipe/tobacco combination.
When new, many of these refurbished pipes would have been in the Prestige Pipe class. cond., with the merest of tooth marks (can't really callthem indents); one on the bottom and one on the top of the stem. Shape # is 51091 &the draw is wide-open and the nomenclature clear & crisp. An oxidized stem will taste foul and a blocked draft hole will cause you to puff harder to keep the fire lit in the bowl.The pipe itself should have adequate rest between smokes and have the cake trimmed back to a reasonable thickness (I like less than a dime thick cake). It takes some experimentation to find out if a flake burns best fully rubbed out or folded and stuffed, which pipes work best with which tobacco etc. But, you can make sure that an over moist freshly opened tin of tobacco can have a chance to air out to the correct smoking humidity.