Alvin Manufacturing Sterling Silver Overlay Flask

Antique Sterling Silver Overlay Flask. I believe it was made between 1886-1893 but cannot be positive. The marks on the bottom of the flask include the Alvin Manufacturing Maker Mark as well as the word "Sterling" and "F 6-6 C". Unfortunately, my camera flash blurs out the markings. The flask does not have any monograms and the bottom removes for drinking. The flask has a couple of small dings on the top and needs to be polished (I prefer not to polish it prior to selling-I will leave that to the buyer).

Fair