I find these in my local creek. Suspected they may be insulators, been using them as display pedestals for my bottle/marble collection.
PS I do know the item treeguyfred was referring to—I had those on the last house I owned, which was built in the 20s.
Thx Robby. Recently dug a Philly mug-base Hutch rated Rare in Hutchbook, and Ron at HB said they knew examples existed, but mine was the 1st they'd seen. Seems to jibe with 20–40 known.
Planeguy2 - congrats on the pickup! There are bargains out there for sure.
Nice sheared lip, pen-rest, ink. I love this design, and have seen English mudlarks & bottle diggers find them regularly. Glasshouses churned these out in quantity (even the sheared lip was a step-saver, no tooling req'd). So there are lots out there.
Returned to the site this afternoon, but the pickins were slim.
Found this patterned glass extract—
The "spine" on the reverse is raised...
And a couple of lids (a salt-glazed sugar lid, and glass fruit jar seal, "THE NEW PARAGON")
Thanks, Fred. The Heintzelmann is a beauty, as is the Kelly (smaller m&p). They're not super rare, being from Philly. The Stadelman is an Ardmore bottle, and I do hear that one's desirable. Yeh, I love the scripted ones, they are timeles. I also have s Scranton Rx with a backward "S" in Scranton.