Here I have a great, probably mid 19th century, keyhole saw which is unusual in that it features a small warranted superior medallion. I've seen a lot of keyhole saws and this is the first I've ever seen with a tiny medallion. Unusual!
Can make out the words 'Sheffield' and 'Cast Steel' but not a makers mark (though it may have been there).
Blade is in good condition but with a slight bend towards the toe. Easy fix.
Please don't hesitate to get in touch with any questions.
Cheers! Enjoy!