I've seen this exact model too and they were not just for target use, but more so for hunting pistol use! Also look up 'bicycle guns' or 'pocket rifles', which essentially were pistols that you could add the skeleton stock to, for better accuracy, but were easily taken down for transport on bikes, which was THE form of transportation for most people 'back then', less walking LOL!
Be AWARE that in use that they used to be a NFA or National Firearms Act item and/or concern IF/WHEN affixed to the pistol. This was subsequently rescinded for target pistols like the Steven's Gould and Model 35 Offhand pistol ... but could potentially apply here if one affixed that one to any other pistol firing a rimfire or c'fire cartridge, as I believe BP arms (just due to their manufacturing or design date) are exempt.
Note the Stevens target pistols dates of manufacture spanned across the dates of the 'antique arms' cut-off ... and the company records are lost, so one can't prove if one indeed has a real antique or a 'modern' pistol.