I know of roughly a handful of these very rare utility bottles, and all of which are in prominent collections. Probably from the Baltimore or Philadelphia area, shards of these utility bottle / jars have been found in the context of 1820-30’s privies, and most of which in a wonderful copper puce color range. This one is no exception, it is also made from a batch of bubbly copper puce glass! The form is 12 even panels, sloped shoulders to a wide tooled mouth /lip treatment. This looks like it was used as an ointment jar, salve or a blacking. All of the ones I have handled have a tubular pontil scarred base. This one appears to be smooth, but it may be just extremely faint. I don’t believe these were ever made past the 1840s. Condition is excellent, one very shallow burst bubble (can be seen in the photo) is really minor. A FINE example, priced to sell! The opportunity doesn’t come up often to add such a GREAT utility bottle!