OK Johann, more information needed. None of my references show a Model 1907.

The most often-published schema for pre-WWII Mannlicher Schönauer models is:
1900 6.5x54 (round bolt-knob)
1903 6.5x54
1905 9x56
1908 8x56
1910 9.5x56
1924 .30-06, 7x57, 7x64, 8x57, 8x60S, 9.3x62, 10.75x68

Please indulge my ignorance here: what's the go?

Also, why no "Oesterr Waffenfabr-Ges.Steyr" on the left side of the action.
...and no "M" in front of the 1907. I'm on a steep learning curve it seems!