this thread woulld be a collective "rational apporoach" to dating a pilotka, every body are welcome to help us.
First way :
The stamp's style : (I tried to collect picture from all the net).
харьковскии совнархоз фабрика = Factory of Council of Economic of Karkov
головных убороз = manufacturing patent ?
г харьков = City of Karkov
1 сорт размер 55 = sort 1 / syze 55
Post war stamps of the "red warrior" factory, this type is very often faked, by erasing of the date.
Stamps of the "red warrior" factory of the 40's.