BHG One of many many old keys in my house, trying to figure out what this could be for. Can’t get the image to upload, so here’s link to it: http://imgur.com/UrPbR5i
oldbiscuit That is a push key for a 6 lever push key padlock. More than likely, being as how it’s a Miller lock key, it probably went to a Champion 6 lever round padlock. Now if only you could find the padlock, hmmm.:o:
wylk The key is for a relatively common “pancake” pushkey lock. See for example http://www.antique-locks.com/showthread.php/925-Miller-(Champion)-6-Lever-Pancake-Padlock If you need to upload images in the future, try http://www.antique-locks.com/showthread.php/3328-How-to-upload-images-to-your-posts For future readers, here is the image (which I did trim and shrink a bit):
