Only an estimated 200 of these "Sidehammer Model" revolvers were manufactured by Josiah Ells in Pittsburgh in the late 1850s. It has light engraving on the rear section of the frame, a spot for a cone front sight (absent), top strap groove rear sight, "ELLS PATENT" (left) and "AUG. 1 1854/APRIL. 28. 1857." (right) on the sides of the hammer, "42" on the back of the left grip and right side of the frame, and "23" engraved on the butt.

Very fine with 85% bright original high polish blue on the barrel and cylinder, 30% of blue on the frame, attractive case colors on the loading lever and subtler case colors on the hammer, light brown and gray patina on the balance, some spots of minor pitting, and mild overall wear. The very fine grips are have strong finish, a chip on the right at the toe, moderate edge wear, and numerous small dings and scratches. It works in double action but does not hold at full cock in single action. These revolvers are very hard to find, especially with significant original blue finish like this one.