If I recall, a few years ago, Iwan Ries claimed to have 15,000 pipes in inventory, so if you have something specific in mind, it is probably worth contacting them. Everything they have is not on their site nor in their catalog. I suspect they have many more estate pipes; online much of what they show is sold. I have been a customer for years, but though I grew up just outside Chicago, I have never been there in person because I wasn't smoking a pipe when I was living there, and when I've visited over the years I've had other events and people to see, lots of family time.