Rodin

Tubes made by Rodan-Okaya. From their web site:

In 1958, they delivered their first number display tube and started production of display discharge tubes GR-1, GR-2.

In 1962 they registered the trademark “Rodan”

Though they themselves used both “Rodan” and “Rodin”.
CD12

Rodan-Okaya CD12 tube

CD13

The CD13 by Rodan-Okaya. A miniature top-view nixie tube.

CD14

Rodan-Okaya CD14 top-view symbol tube

CD24

A CD24 tube made by Rodan-Okaya.

CD25

Rodan CD25

CD27

The CD27 is the largest top view nixie made by Rodan Okaya - at 54mm, the numerals are larger than the NL7037 and Z568.

GR-1

The GR-1 is one of the first nixie tubes made by Rodan-Okaya (the other being the larger GR-2). You can see that the lettering on the tube is spelled Rodin, which is typical of the earlier tubes. This tube became the GR-201 and eventually the CD11.

GR-2

Rodan-Okaya GR-2. Apparently an earlier version of the CD12.

GR-201

Rodan Okaya GR-201

GR-211

A medium-sized tube manufactured by Rodan-Okaya

GR-707

The Rodan-Okaya GR-707. A small top-view nixie tube showing electrical symbols. Clearly intended for use in a multi-meter. This has the unusual feature of a side-nipple. The pin arrangement is also very unusual.

GR-836

The Rodan-Okaya GR-836 is a large and extremely rare top-view 'nixie' tube. It has two Japanese symbols, which as far as I can tell mean 'power' and 'on'.