We bought this for a project that never materialized. It came from a local photo studio that was closing; he said it was working fine. I've tested it a few times (see photo) and it seems to work great.
Heated up in about 20 minutes. Don't really know much more about it. Includes a set of 18pt letters, upper and lower case, haven't counted them. Large roll of gold foil is loaded see photos. Machine comes with numerous rolls of foil, some of which appear to be unopened.
I don't know how to change the foil and I can only assume the rolls are meant for this machine. If you're in the north Denver area, you can come test it. The item "Kingsley Hot Foil Stamping Machine Model M-75 (relisted, corrected shipping)" is in sale since Monday, October 16, 2017. This item is in the category "Business & Industrial\Printing & Graphic Arts\Screen & Specialty Printing\Stamping & Embossing".
The seller is "timothyklein" and is located in Erie, Colorado. This item can be shipped to United States.