This Listing is for An Antique Brass Locking Buckle with the Orignal Key. It is marked L&H Co. PAT SEPT.2, 02. The Buckle is locked by pushing down on the small tab. It is unlocked by using the key. It works great. The buckle measures 1-1/4 Inches Long and 1-1/8 Inches wide. I don't know what this locking buckle was used for. OFFERED AS IS. - eBay (May 09)
This lock has a 'Buy-it-Now' price of $34 (Plus $3 shipping).