Chas H. Fletcher's Castoria bottle; a common bottle I dug several years ago, along with some ink bottles. The old advertisements used to claim that children "cry for Castoria." I think it's more likely that children actually cried "because of Castoria!" Relatively valueless, though I have seen them go for a couple of dollars on Ebay.
During a recent antique and bottle hunting trip, I found a Castoria bottle inside the wall of an old house where it had apparently fallen from a nearby collapsed shelf.