PRE 1900 COLBALT ???

[Bottle tumbler]

6" TALL 2" Base looks like a early bromo, not sure? look at the next pictures, sand pontiled??? why a kick up base? any answers? no graphite, no pontil scar. not sure but I would guess it was some kind of one
rick kern

 

[Bottle tumbler]

RE: PRE 1900 COLBALT ??? base

the base straight on

 

[Bottle tumbler]

the base side view

 

[KentOhio]

They might have given it a kick-up to make it stronger and less likely to break. Looks like it worked, if that's the case.