Several manufacturers could have made such a pistol, but the most likely suspect would be J. Stevens Arms and Tool Co.
AFAIK, Colt never made a single shot pistol
made about 1897
The
It's a small-framed pistol, made of steel, colored black, with brown plastic grips. The barrels are ususally short and stubby, about 2 inches long. But longer-barreled models were made. There are many pictures of them available on the web if you search around for the images.
1986
Beeman makes the single pump pneumatic .177 pellet pistol called a P3 there are several variations of this German pistol like the "Marksman 2004" made in China and a few other less valuable and less quality.
Kits were made by Connecticut Valley Arms Otherwise known as CVA
The exact value of a 32 Rimfire Stevens Tip Up Single Shot pistol made of brass with a steel barrel is actually dependent upon a number of factors. Some of those factors would be, the age and condition of the pistol.
My records indicate that your 45 colt single action army was made in 1883.
A .44 caliber derringer.A small pistol called a Philadelphia Derringer.
Most likely J Stevens
if you are taalking about a single action ??? made 1910