Hank, nobody knows exactly what the "+" stamps mean. There has been speculation but research has never determined the meaning.
The (T) is Parkers stamp fot "Twist" barrels. 4 1 indicates the berrels weighed 4 lbs., 1 oz. before striking. The 2 on the lug indicates the gun is built on a size 2 frame. The dates on the water table are simply the dates of certain Parker Bros. patents and do not indicate the date the gun was made. The individual patents and their respective dates can also be found in The Parker Story. The "C" is probably the stamp of the barrel maker or contractor. As I stated in my first post the gun was made in early 1901 according to The Parker Story date of manufacture/serial number tables.
Dean
