Do all old bottles have to have seems?

[Steve54]

Can anybody tell me what this liquid/solid might be? The tiny symbol has some small faint letters around what looks like a two headed bird. There are no other markings on the bottle. The bottle is sealed. Do all old pre 1900 bottles have to be round and have seems? I'm referring to the bottle on the left in the photo.

 

[CanadianBottles]

No, they don't all have to be round and have seams. Bottles from before 1900 can be found in practically any conceivable shape. Non-round bottles without seams are unusual though, I wonder if yours might have seams which are just quite hard to see. No idea what that stuff inside is, probably something that dried out many decades ago.

 

[Steve54]

Thanks. I was thinking the same thing. Maybe it was alcohol that evaporated and left the sludge behind.