And I found a piece of glass that smacked of "old as heck" if you know what I mean. It is clear but cloudy, possibly from being exposed for so long (if it's old) and has a clear 7, 56, 5, and what looks to be an "F" in the middle circle. It looks to be from the front of the bottle. It was found in an area that was very well travelled in the 49'er days if that helps. Let's see what we come up with!