Houkoku/Aikoku Patriotic Presentation Numbered Aircraft
During the Second Sino-Japanese War and during the Pacific War, Japanese companies, civilian volunteer groups and private donors funded the purchase of military equipment for the Navy and Army. To acknowledge their donation, each piece of equipment was assigned a numeric patriotic presentation number and painted with the donor's name. For the Imperial Japanese Navy (IJN) these were Houkoku Gou. For the Imperial Japanese Army (IJA) these were Aikoku Gou.
Houkoku Gou (Navy Patriotic Presentation Number)
Aircraft purchased by donors for the Imperial Japanese Navy (IJN) were assigned Houkoku Gou (Navy Patriotic Presentation Number). These numbers were assigned cardinally starting with number 1 and are documented to have reached at least 5887. They were assigned to many different types of military aircraft including floatplanes, fighters, dive bombers, torpedo bombers and medium bombers.
490 / A6M2 Zero 4688 donor: Awa Seishi (Awa Paper Manufacturing Company) abandoned at Lae Airfield
500 / A6M2 Zero 4698 donor: unknown abandoned at Lae Airfield
529 / A6M2 Zero ??41 donor: Mr. Yoshihide Shibuya crashed in New Guinea
550 / A6M2 Zero 5779 donor: Rengou Shiki Gou (molded paper company) abandoned at Lae Airfield
552 / D3A1 Val ???? donor: private donor who paid for one of each type of aircraft in Navy service
869 / A6M3 Zero 3018 donor: civilian volunteer group
872 / A6M3 Zero 3030 donor: civilian volunteer group
874 / A6M3 Zero 3032 donor: Sadahei
877 / A6M3 Zero 3035 donor: Korean
1033 / A6M2 Zero 3471 donor: Dai Ni Aoshima Kinshifu-gou (No. 2 Aoshima Fine Thread Cloth Company)
1045 / A6M2 Zero ???? donor: international
1049 / A6M2 Zero 5455 donor: Yan'an spinning operating in China
1053 / A6M2 Zero 5451 donor: Zen nan nori gou (All-south-seaweed processing company)
1187 / A6M Zero ???? donor: ? number could be 1187, 1137 or 1167
Aikoku Gou (Army Patriotic Presentation Number)
Aircraft purchased by donors for the Imperial Japanese Army Air Force (JAAF) were assigned Aikoku Gou (Army Patriotic Presentation Number). These numbers were assigned cardinally starting with number 1.
Yokoi Houkoku List - Houkoku Gou 1-994 (List 1)
Yokoi Houkoku List - Houkoku Gou 1000-5887 (List 2)
Thanks to Mr. Yokoyama and Yoji Sakaida for additional information