these are most often always VERY good pipes.
If the S logo on the stem has no crown it's an earlier example, like late 50's or early 60's,
Here's some general info, from Basil D. Stevens...
1) Regd. No. stamping discontinued in late 1960s to very early 1970s. This is theStanwell trade mark registration. The “48” indicates that the registration was made in1948. (info rec’d from Jorgen Grundtvig, Managing Director, Stanwell A/S)
2) Block letter stamp “Silver S” used until late 1960s and then changed to script.
3) Up until the early 1960s only the top pipes, e.g. “Hand Cut” had the stem/mouthpiecesstamped with the Stanwell logo of a crown over “S”. The “Hand Cut” is stamped on theshank of the pipe. The “Standard Models” may or may not be stamped with the “S” logowithout the crown.
4) “Stanwell” stamp in script dates to the 1950s.
5) Progression of the Stanwell logo is: “S” in white paint; crown “S” in white paint; brasscrown “S” and finally a silver crown “S”.
6) “Handcut” stamped on black vulcanite stems have not been done since at least the1970s and possibly earlier. (info from J.G.).
7) Currently, the only mouthpieces that have “Handcut” stamped on them are made of Cumberland rod and are used exclusively on the “Unique” line of pipes. (info from J.G.)
8 ) Early Stanwell/Winslow pipes were stamped with a “W”. In later years this has beenchanged to a “Winslow” stamp.
9) Stanwell started using acrylic for their mouthpieces in 1995 and identified the acrylicstem with a “dot” following the Stanwell crown “S” logo. This practice has beendiscontinued.
10) Benni Jorgensen, father of Lasse Skovgaard, has been doing the Stanwell repairssince1995. Prior to this, they were done by Tom Eltang.