I stole this from another site Military Order No. 106 (March 9, 1913) stated that, except Cavalry, almost all Line units would wear a removable plastron for winter parade dress. Color of plastron and piping were to be as follows: General officers: - Infantry : red - Artillery, Engineers, etc: black (velvet/officers) , red piping General Staff: black (velvet/officers), red piping Grenadier regiments: yellow with piping according to division: 1st: red, 2nd: blue, 3rd: white; 4th: yellow. 1st Nevsky Infantry regiment: red with white piping 2nd Sofiisky Infantry regiment: light blue with white piping Other Infantry regiments: - 1st regiment of division: red (no piping) - 2nd reg.: blue - 3rd reg.: white - 4th reg: dark green or black; red piping Rifle regiments: raspberry Artillery, Engineers, Railway, Aviation: black (velvet/officers), red piping Most other units wore dark green with red piping. So he was a Grenadier Reg officer before ww1 1913 era George