These might be of interest:

Model - Caliber -Serial - proof date as stamped.
M1905 - 9x56 - 4581 -5958.20
M1908 - 8x56 - 12544 - 972.25
M1910 - 9,5x57 - 8855 - 969.27
M1903 - 6,5x54 -20564 - 362.28

M1950 7x64 10188 (sold)
MC .270W 28354 "59"
MC .243W 40979 "63"
MCA .308 38336 "?" (sold)

("sold" meaning, don't ask me now what year is on the barrel !).