Tilley's Summum Bonum Bitters.

[cordilleran]

This bottle, a "Tilley's Summum Bonum bitters" is currently in the last hours on auction with the American Bottle Auctions site https://www.rtam.com/americanbottle/cgi-bin/BIDS.CGI. American Bottle Auctions claims it is in almost perfect condition. My question is a Tilley's Summum Bonum bitters bottle considered rare? I just found this information on the web. Not much out there concerning this bottle. https://www.peachridgeglass.com/2015/01/tilleys-summum-bonum-bitters-west-haverstraw-n-y/