Saw this at the Grabow site:
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This isn’t a model by model breakdown, but they are making 200,000 pipes a year. Perhaps this could be a starting point in figuring this out.
I also found this blurb on the net, but I was unable to access the site from which it came:
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Also found this at smoking pipes in regards to Savinelli:
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And finally, here is what I saw about Missouri Meerschaum:
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Good investigative work!
Even as numbers fluctuate, I'd bet that relative sales among these contenders remains in that order.
Which is similar to what many of us guessed.