Germany L&G Frankfurt Field Trial
45 units R1 prefix
R1 000000 – R1 099999
These are second stage of testing (1983-1984) with final phase field trials, where the Deutsche Bundespost branded cards begin to be used by the public. the color of the cards are bright red.
Toward the end of the Frankfurt trials in around 1984, cards with thermal band are produced, but the trial ends with the selection of Siemens Chip cards chosen for the National phonecard telephone network.
For more detailed information on L&G Germany please see the website: Optical-Cards
Also if you have accurate information about Landis and Gyr serial numbers outside our known ranges, please :