I have a Colt 1903 semi-auto in 32 cal which was purchased at an estate sale. It is one of three that I have but this has no markings on either side of the slide/barrel housing but the frame has a serial number on it. There is no patent information, nothing that says Colt, there is nothing. What do I have in regards to this gun, and is it actually even a Colt? I am thinking it might be a "lunch box" special where as it was discarded in the assembly line barrel before the roll marking procedure and taken home by a worker. It happened with the Remington Rand 1911s during WW2.