This is an interesting bottle. Collectors would call it an amber strap sided flask. There are thousands if not millions of these that are either
(1) unembossed;
or
(2) marked "Warrented Flask"
Yours dates to the late 19th century and is somewhat personalized, if only with someone's initials. A number of such bottles are listed in the McKearin flask book, American Bottles and Flasks and their Ancestry but it is by no means an exhaustive list.
I was just discussing such flasks the other day with a collector friend of mine - we were commenting on how some of these fetch big money while others are ho-hum value wise. It all depends on the interest of a few individuals.