I've had one, with identical stamping. Mine had a stamped stem 'C' which would indicate 1980's or later production. Mine was also a clearly rusticated pipe, not sandblasted. The pipe you linked to above is very similar to what I had, including the brass band affixed to the stem.
They aren't common, but they aren't very collectible due to the time frame of manufacture, IMHO. Mine was a decent smoker, but nothing spectacular.
Doc