Beginning collectors often confuse an Owen's ring with a pontil mark and it is easy to see why this happens.
The pictures below are from two early machine made medicine bottles.
Characteristics: Lip often more crudely applied than later forms. For example, the Eagles, for example, lack the fine detail of pre-Civil War Historical Flasks.
So how can I tell if this bottle is any good, and how old it is.The disk-like mark is sometimes confused with a pontil.the pontil is actually broken glass where the metal rod used to hold the bottle while the lip was form was broken off leaving a sharp scar.Characteristics: Often black glass especially very early. Characteristics: Lips will be well formed and tooled but not usually crude.