Hey RED - pardon my ignorance, but not sure what "finishes" refers to...somewhat new to this all. There are vertical mold lines up the body of each bottle, but they end near the neck. The groove on this one bottle in not effected by the the mold lines.
I tried to capture it in this picture...
cobaltbot - sorry I didn't post the mouth of the three common bottles. As you can see, it is different than the other one in so much as there is no grove on the outside of the bottle.
Tearing down a wall in an 1864-ish house, I located four bottles and a cork. Three of the bottles are identical while the fourth is a little different. The three common bottles' faces are embossed with:
BOTTLE SEAL Co
PAT. '85
BALTo Md
These all have a common smooth necks/mouths of the...