It looks fairly early. Does it have a ground lip? That may have been from C L Mitchell in philadephia. It could have a pretty good value if it is hand blown.
Hard to tell in that photo of the lip. Does the seam go all the way up to the top of the lip? If it is hand blown the seam will end somewhere in the middle of the threads.
Even if it is machine made it is a neat little bottle.
I have a cobalt blue Mitchell's eye salve 1-3/4" tall bottle that I would like to sell on eBay. It is in very good condition with one slight chip in the groove that is hard to see. I was wondering where I could find out what this bottle is worth?