Paul, Here are first 2 glass plate images of Reference China arms, Jon
1. Rifle Model designated 1907 in caliber 6,8X57. Has a Large WFM in Round form on right side of stock. The Chinese preferred the smaller calibers which had more velocity etc, What is of note here is rifle shown has a barrel of 782mm some 42mm longer than G 98. Actual production rifles had these extra long barrels and then some rifles had normal 740mm barrels. China rifles used standard length actions, its possible the China folks realized the longer rifles for their generally short men were to clumsy to carry around
2. Model 1907 Cav, Carbine in 6,8mm. At same time Mauser used similar examples for the Paraguay Contract which used longer ring Intermediate actions, and again in 1908 for Turkish carbines. Note this China Reference carbines has a semi finished stock. The Paraguay Model has Mauser banner in right side of stock,
All the rest of pics are of docs so will come in groups of 4 and 3 etc in 3 more EM .