Ciao, Franco. Welcome to the group.

With 2nd Schofield # 54XX, in hand,(which is a matching number Schofield) the patent scroll on the right side of the barrel reads:

+ SCHOFIELD'S PATS. JUNE 20TH 71. APR 22ND 73 +

all on one line. there is an underscore on the "TH" or 20TH and on the ND of 22ND

HOWEVER, the left side of the barrel has an elaborate a 2 line roll stamp:

+SMITH&WESSON SPRINGFIELD MASS. U.S.A. PAT.JAN 17TH+
&24TH 65. JULY 11TH 65. AUG. 24TH 69 JULY 25TH 71 .

The 2 lines are balanced just about evenly with the bottom line just a tad shorter but centered.
these lines have an underscore on all the TH of the dates.

The beginning and end markers or the 2 line patent scroll is a stretched Maltese Cross" which is near as tall as both lines.

Please include a photos. Would help us, help you, evaluate and grade condition.

I strongly suggest you examine carefully, to determine if the serial numbers, on all parts, match. There are serial numbers on the barrel (under the barrel catch), on the catch itself, on the face of the cylinder, on the butt, and on the underside of the grips. There are other numbered part, too, but these places should qualify it sufficiently.

Use the precisely sized, hollow ground, screwdriver or driver bit to remove the rear screw of the barrel catch, after which the catch should rotate upward enough to determine at least a partial serial number. Complete removal of the catch will verify the catch number, too.

The rear screw, if original, should have a partially ground flat, mid-section, with the serial number also. Sometimes, after so many years, these screws get damaged and thus replaced. Really not much of a detraction if replaced with original type or original replacement screws on the barrel catch only. Any other damaged or replaced screws will affect the value, as will a refinish.

With the grips off check for stamped dates to determine if factory refurbished. Factory refurbish usually (but not always) have a " * " in the serial number either before or after, on the butt.

You may also contact me directly, if you need.

Sal Raimondi, Sr.

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ANTIQUESMITHS
LM1300 SWHF425