This is a beautiful lot of four skeleton keys. I cannot make out any marks except on one and that key has the name Penn Co on it. The largest key measures 3 and 1/2 inches and the smallest key measures just over an inch. These have a great rusty patina. They were found here in Colorado which makes me daydream of their origin. Did they open a door here when the West was still wild? Did they belong to someone who saw great fortune from the gold rush? Did the owner remain fortunate or suffer a fate like Baby Doe Tabor, dying penniless? Your guess is as good as mine but I sure wish I could just take a peek into the past they came from. I will ship internationally but please message me so I can provide you with an accurate shipping price. If you have any questions please feel free to contact me. Thank you!