Moreover, I post the following contents again.
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Type99 Cannon does not emit soot like M2 (.50 caliber).
The airplanes of Tainan flying group were always polished up very much.
They were trying hard in order to fly at high speed.
They wanted more speed , so the antenna pole of radio has been removed.
Radio of those days was of inferior quality.
And it was useless.
After the Tainan flying group changed the name into 251 flying group, Zero without an antenna were still used.
And is new discovery here.
http://homepage2.nifty.com/amraam/ah/tmp/a6m2_v138.jpg Saburo Sakai went to the Guadalcanal Island to attack, and he got seriously injured on August 7, 1942.
The tail letter of A6M2 which he had used then seemed to be "V-138."
This photograph was taken when he had returned to Rabaul.
Once, he was said to have used V-128.
And it was said that V-103 used when he went to Guadalcanal.
Probably, Sakai had used them.
However, he had used V-138 on August 7, 1942.
In this photograph, the platoon leader discernment mark (blue slanting line) in the body cannot be checked.
It seems that two blue lines have sandwiched the tail letter.
