markings are provided for four different schemes:
1. R-1 "Krasny Suchanets" from the 19th Independent Aviation Unit of the Red Army Air Force named "Far Eastern Ultimatum", Soviet-Chinese conflict, Chinese Eastern Railway (CER) October-November 1929
2. R-1 "Imeni Kingiseppa" built with the money of workers from Leningrad and workers from USSR`s Estonia, Red Army Air Force squadron "Our answer to Chamberlain", Moscow, 1928
3. R-1 "Chernigovets" from the Red Army Air Force 5th reconnaissance squadron, pilot Lee Dia-muk, Kharkiv, 1925
4. R-1 "Udarnik-nezamozhnik", USSR, South-Western military district, supposedly 1926.