Found this today at a site that has only produced (no backmark) colonial buttons, a KGII, and a farthing....I can make out what appears to be a bust facing left, and BRIT....Im stumped, it's bigger than a large cent. Someone had a nice house fire and this poor coin fell victim. The other side is completely useless, I'ts melted to the max.
After further examination and help from Coinut and several others, the coin mystery has been solved. This coin is a Bun Head Queen Victoria. This is a very modern coin in contrast to all the other targets. So far no buttons with backmarks, and only colonial items. I believe this cellar hole was ony a temporary dwelling while the larger home was being built very close by. Perhaps this home was standing alone for several years before it burnt down and someone along the way dropped this coin? I honestly don't think It was lived in up into the queen victoria era. There is absolutely no modern targets anywhere.