Hi Murray,
About the barrel's originality: Does it have the gun serial number and a crown/N proof at the bottom of the barrel?
I still suspect, that when it has a 1914 date on it, something was done to it in 1914.
I have a mismatched 1912/1928 version, where the upper has the original barrel, no barrel date added and the serial number and crown/N proof at the bottom.
I would expect that combination (apart from the mismatched frame

) on an unaltered pistol.
Value-wise it really doesn't matter.