From my own collection that I've been thinning out, here is an iron pontiled lager that I've never seen for sale. I dug this in 2018 and then got very lucky finding a slightly better example. It has a sloping shoulder lager shape and is for Germantown, part of now Philadelphia. It has an applied double taper top, and the iron pontil scar is frosted in a kickup base. Priced down for the lip chip - good chance you'll never see one for sale again.

Embossed: J. CORWELL / GERMANTOWN // C

Height:  7 1/2"  
Color: deep green

Condition: a dug bottle that has only been rinsed out. The main issue is a 1/2" lip chip on the backside, and an associated flake that goes into the collar (but not neck). Totally stable and old - no cracks. Otherwise, it has some dullness and spotty wear.

Reference Number:  3185

Price: $300