The bottle is a whiskey flask produced in an automatic bottle machine (the irregular ring on the bottom center is a valve mark). So, that indicates the bottle was blown after 1903. The embossed "FULL PINT" strikes me as a holdover from the 1890s. My best guess is this is an early 1900s bottle.
I've seen this shape called a "new whiskey" and the lip a "brandy lip."