I've seen these Sake Bottles, before. I think these are fantasy pieces, these are my suspicions:
1.) The aircraft is not a Zero.
2.) 神風特別攻撃隊 was not written correctly.
3.) The paint color seems added afterwords.
4.) Why would they write the year of the "Shinpu Special Attack Unit"? It's like those fake U.S. Airborne Crickets having 1944 D-day printed on (If you know what I mean).