Hello All, I am Jared I am new to this forum, I work at a Precious Metal Refinery On Long Island where we always have new and odd things coming in. I have this 1 Oz Silver Bar I was wondering if someone could maybe tell me more about it. Everything is right on it, weight and Silver Content. Here is a Pic. http://imgur.com/a/Ven9j
It looks like a sheet-stamped silver bar. I have a few on them in my collection, have not seen one like the bar in your picture.
I think this is a rare vintage draper mint extruded ingot. There are similar Swiss of America stamped bars that usually run around 5 troy ounces, I've seen Swiss of America bars a bit under 3 ozs each similar to this but I've not seen a 1oz one. It definitely looks to have been produced by draper mint to me.