Vintage Novelty "UNSOLD" Brass Key Blank – Code 604
Up for sale is a unique and highly collectible vintage mid-century brass key blank. This is a rare factory salesman sample or display piece explicitly stamped "UNSOLD" on the front bow, with keyway pattern code "604" stamped below.
🛠️ SPECIFICATIONS & DETAILS
Reverse Side Stamp: MADE IN U.S.A.
Condition: Excellent vintage condition with a beautiful bright brass luster and clean uncut blade edges. Please see the detailed photos for the exact item you will receive.
🔑 HISTORY & COLLECTIBILITY
This key was originally produced as a manufacturer sample or display token for a traveling salesman's hardware layout board. Because it was a non-retail demonstration piece, it was permanently stamped "UNSOLD" at the foundry. It makes a fantastic conversation piece for lock collectors, advertising enthusiasts, or unique steampunk crafts.