Every week we comb the internet to find you the best deals in vintage clothing. The eBay seller Brooktrader has a pair of real vintage pants for sale here. The seller dates them to the time of the patent (1894) but I'm more familiar with Solide buckles being used as late as the 1930s. It has design features typical of the day (button fly, buttons for suspenders etc) the buckleback seen in the auction was instrumental in in ensuring a snug fit and remained in use until belts/belt loops were introduced in the 40s.
Edit: It sold for $33
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