Original Shotgun Trigger Patent Lithograph
[Firearms patent ] Dumoulin's Provisional Specification. No. 2696 for improvement of a shotgun trigger mechanism. Published by Malby & Sons, Photo-Litho. February 2, 1898. 1 page about 14 ¼ x 9 ¾ in. Linen backed. Original patent lithograph for F. Dumoulin’s improvement of a shotgun trigger mechanism. This lithograph was.....