Dont forget Russia supplied the Chinese with I-16s during their war with Japan. I dont have any exact figures handy but the I-16 had a huge foot print in the war. Maybe the only fighter to go from the start, "Spain", to the end.
So we have them in Spain, in Manchuria, in Finland "winter war" "continuation War", in Barbarossa, in China against japan. I know WW-ll was one big airplane swap but still, the I-16 had a large presence.
At its birth it was revolutionairy, being first cantilever monoplane fighter with retractable landing gear to see squadron service in any country in the world. It flew from '33 into the '50s in some air forces. If we get the 1939 type 28, "which it looks like to me", then its a later model, better armed, a little faster...ect