Hairline crack in shank

[jpmcwjr]

Well, since this thread is now alive, could someone guess at this:
Can anyone easily ID the year of the pipe, or direct me to a site where I can? A bulldog, Comoy "Grand Slam/ Patent" on one side, "Made in England/ US Pat 2001612*", then a 4 by itself on the other. I did some googling, and now suspect it had inserts for some patented filtering system, and the metal ring may have been part of it.

 

[bayareabriar]

You can better date it by either "made in England" in a circle, or "made in London" in a circle over "England".

 

[bayareabriar]

Well, not better date it, but more quickly narrow it down.