.44-40. 7" ribbed barrel. SN: 13604. Nickel finish, blued trigger, color casehardened hammer, checkered hard rubber grips. Single action open top revolver with fixed frame notch rear sight and front sight blade, automatic ejection, loading gate and six-chamber scoop-flute cylinder. Top of barrel with one-line Merwin, Hulbert & Co patent markings, left side of barrel with one-line Hopkins & Allen manufacturing marking. Matching assembly number 3010 on left of frame under grip, on rear face of cylinder, on rear face of barrel web, on cylinder arbor and scratched inside the right grip panel. Lower left of frame marked CALIBRE/WINCHESTER and 1873, indicating .44-40 chambering. Butt with swiveling lanyard loop.