my first thought was it is not a clipper ship because american built clippers had rounded sterns.
Then i checked American built clippers by William Crothers and found some clippers did have a square stern.
out of 150 clippers listed 23 of them had square sterns so you could narrow it down to 23
next measure the model from stem to stern and see if the length can be determined which might be hard because you dont know the scale.
Clippers were first built with transom sterns and later replaced with the rounded stern. so this hull can very well be pre 1850 It was William Webb from New York who built transom sterned clippers the most famious was the Comet.
Donald McKay between 1845 and 1850 built a number of transom sterns on his packet ships
in 1800 Robert Seppings introduce the round stern at the Chatham shipyard in england by 1832 William Symond introduced the elliptical stern. By the 1840s clipper ships were using all 3 types of sterns the Transom stern, the rounded stern and the elliptical stern but it did not take long for the transom sterm ( which you hull has)
to fall out of use because of its structural weakness and was quickly replace with the round sterns.
So we can date your hull between 1832 and 1851 american built.
my guess is to look up the first ships built by William Webb of New York