Thanks Tony, Rafal and IvanPutski for your help. The medical corps insignia - would that be prewar WW2 or postwar?
Also there is a badge with a star on it - any thoughts? Not sure even if it is Polish but these were all in the same packet. The two insignia with L.P. might be Signals and I wonder if the L.P. refers to the Polish Peoples Army?
Anyone know or want to speculate on what the badge is with the two stalks of wheat?