Odd T30 or T35 Arisaka

Two questions:
1) Has anyone come across of a T30 or T35 Arisaka with the characters that translate to "Air Release Gun" and no Emperor's stamp?
2) what were the markings on the so-called 02-45?

I am in the market for a T30 or T35 Arisaka (or both).

I recently came across a very nice looking but odd T30 or T35 Arisaka rifle at a very decent price, but I passed on it for the following reasons:
1) stamped markings were the characters that translate to "Air Release Gun" and there was no Emperor stamp (it was not ground off, it just wasnt there);
2) no other markings indicating Type. but it was a Tokyo Koshikawa factory stamp and serial number that I believe paced it as pre-WWI;
3) The listing showed a tag labeling it as a Type 35, but the pics showed it had a Type 30 rear sight (typical of the so-called 02-45?);
4) the mud cover grooves were not present (also typical of the so-called 02-45?)

Everything else looked correct for the T30 (hooked safety, aforementioned rear sight, stock, etc.)

Any thoughts? Should I regret not buying it? ...wait, dont tell me! ;-)
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