Collector friends,
as you've seen, recent years have seen a great deal of effort from the entire community to improve and expand the catalog with test cards.
We all deserve to extend a huge thank you to two important collectors who have shared their knowledge and expertise, acquired after years of hard work, with Colnect.
Alain Knecht (optical), whom you all know for his extensive expertise on Landis & Gyr, shared with us extensive details and information on the multitude of test cards and prototypes that L&G has developed over the years.
Check out his wonderful website: https://www.optical-cards.com/
Eric Schuenemann (thematrix) is the founder of the Phonecard Museum, where he has collected incredible pieces of phonecard history and all stages of production and development, including tests, prototypes, and trials for all the various manufacturers. A true gem for all collectors.
You can visit his website and contact him to further enhance the museum: https://phonecardmuseum.com/
We hope these and other expert collectors will continue to help us catalog and learn more about phonecards, as well as enrich our collections with important pieces.
Happy collecting.