Each tube is able to display the following shapes: '0 1 2 3 4 5 6 7 8 9' and pair decimal points. These nixie tubes are used and was removed from old equipment. Operating time of nixie tube was minimal or not used at all. Each digit was tested.

Anode is Pin 1.

Cathodes 2, 13 are Decimal Points.

Cathodes 3-12 are Numerals: '1' is Pin 3; '2' is Pin 4, '3' is Pin 5, '4' is Pin 6, '5' is Pin 7, '6' is Pin 8, '7' is Pin 9, '8' is Pin 10, '9' is Pin 11, '0' is Pin 12.