A curated selection of cleaned scans of Yoshikazu Yasuhiko's artwork being used on telephone cards. Telephone cards were widely used before the internet even going into modern day cellphone usage to pay for extra minutes and phone services world wide. In Japan, many were marketed to teens and young adults in anime magazines, featuring artwork from popular mangaka and animators of the day. The earliest ones I have are from 1983 post the 3rd Gundam compilation film that feature Amuro and Char. Other cards in this set come from Animage, Animec, and Gundam Ace (mainly The Origin themed cards).
There are hundreds of these out there, but these are a mix of ones I own and other curated images. They are easy to come by and are often the same price as menko and other trading cards.
More info on cards via a 1999 article: https://www.nytimes.com/1999/12/24/your-money/IHT-fad-in-japantelephone-cards.html
If you'd like to help me buy more texts to scan, I'd appreciate it! I am currently sourcing books that would be meaningful to the community at large. If you have suggestions, please contact me.: https://ko-fi.com/retroanimechris