Blue Riband, Stuck Stem?

3200-4000 grit micro-mesh on the tenon should do the trick. Just pinch it around the tenon and go around once or twice lightly and then give it a try. If it won't go, do another couple of rounds. No big deal. Hard to mess up if you go slow.

I've used the freezer and sanding that rothnt just mentioned, but in your case, I also strongly recommend having a professional work on the pipe.
A Comoy's unsmoked Blue Riband is quite valuable. Yours even more so to you, since it was your grandfather's.
If you check Mike Meyer's site, you'll see that it will cost about as much as a couple tins of tobacco to have him work on the pipe
Let us know what you do and post some pictures when you get a chance.

Ohhhh... It's unsmoked. Well, that is a different story. I'd still do it myself, but if you're at all unsure, let a pro do it. That's a very lucky inheritance.

Holy moly, that's a pretty pipe! Thanks for sharing those pics. Any idea why this particular pipe went unsmoked?

It is one very nice pipe.

You could try rubbing the tenon with a pencil.

Like the graphite used to lubricate a lock, it should help.

Word of caution... DO NOT USE POWDERED GRAPHITE!

If you get it on the exterior of your pipe it'll be there for a long time...

I have used a #2 pencil with success.
Something not mentioned as of yet.

I DO NOT RECOMMEND THIS:

I mention it only as a word of caution...

If you remove the stem while the pipe is warm the stem will loosen.

In this instance it ain't a good thing.

Good luck.

::

Vermonter:
That is one beautiful Blue Riband and I'm glad that you treasure it so. I broke my grandfather's Mastercraft burner because I hadn't found this site yet to ask the questions you have. You're much wiser than me.
Several months ago I picked up a lovely patented Saiseni Fantail, circa 50's-60's, that had the same problem. Three complete revolutions with a 4000 grit micro mesh pad have alleviated most of the stickiness, but it's been a three week process. I'd make a pass, wait a week and then try again. One more swipe with the pad should do it and any tuning up from that point on can be done with a chunk of beeswax. (Amazing stuff, beeswax. It loosens and tightens.)
Mike Myers walks on water around here, and rightfully so, but you're perfectly capable of facillitating this fairly simple fix yourself. I'll send you a 4000 grit pad and, if you're patient, there won't be anymore overnight freezer stays for this beauty. (Just return the pad.)
Let me know.
Cheers.
Fnord

Gorgeous Comoy Blue Riband. Unsmoked that would easily fetch three fifty on eBay. Plus its a family heirloom. Priceless. I'd ziplock baggy the pipe and pop it in the freezer for twenty minutes. If its not loose at that point, then send it out to a competent repairman for fixing. Google Pipedia and Comoy to get a history lesson if needed. Great pipe.