The photos are great. The tall smiling dude(Chuckles) has collar tabs for pay groups 5 and up. His shoulder devices are called passanten. I beleive they were introduced in 41 made mandatory in 43 but few ever made the change. That's why you almost never see passanten for sale. Someone earlier said there were several changes in RB uniform regs, etc and there are no Reichsbahn books. Actually there are a couple of reference books. They are only available in German. "Chuckle's" passanten are for pay group 2 Reichsbahnoberrat. In the group photo the white summer tunic also appears to be PG2 and the guy right behind "Chuckles" is also high pay grade. This might have been a big meeting of regional directors. In the close up both guys facing "chuckles appear to have gold trimmed hats, another indicator of pay group 5 and up. Everything would be identicle on the visor except for red piping to indicat pay groups 7 & 6. The guy with his back to us has gold passanten also, can't tell if there are any rosettes(flower shaped pips used by RB from 41 on) so he is also 5 and up. The guy behind and to the right of "Chuckles" has the closed neck tunic with pay group 5/up tabs. Intersting group of pics, thanks for posting.