Tubes made by Rodan-Okaya. From their web site:
In 1958, we delivered our first number display tube and started production of display discharge tubes GR-1, GR-2.
In 1962 we registered the trademark “Rodan”
Though they themselves used both “Rodan” and “Rodin”.
Datasheets are at the end of this page
1959_GR-11
1970_GR-110_116
1970_D4512-AA-1
1974_ED4907-AA-1
1976_F5201-1