I have been holding on to this flask for a while to sell it (on eBay) in order to raise funds, when I decided to acquire something special for my collection. Any thoughts on what it's worth or what I might get for it on a good day? It's a Pike's Peak Flask GXI-21 with a sheared lip, but no pontil. The flask is extremely whittled, strongly embossed, and very clean. No scratches, high-point wear, staining or cloudiness - only a small chip on the back side of the lip keeping it from being mint.