Striking 19th Century Geometric Perspective Pair of Diagrams in Ultra Black Ink carved frame found in Upstate NY

found in Upstate NY

)  At any rate

There is a bit of bending to the tin along the top edge and plenty of rust on the back side but just a little  in the background on the front

which are attached to the center of the heart via an old stick pin

4 1/2" w x 3 7/8" d x 1 1/8" t

Striking 19th Century Geometric Perspective Pair of Diagrams in Ultra Black Ink carved frame found in Upstate NYThis one came out of a large c. 1870s century folio filled with all sorts of things, including a whole notebook of geometric perspective drawings, listed separately, and an assortment of handwritten notes on everything from wax flower making to casting. Included were a handful of single page loose perspective drawings, executed in black ink, which I think so good on their own I am listing individually this one to my eye just a stunner, showing the