Posted by Asha Seshan - ROBOTMAK3R June 12, 2020 Introducing 51515: the Next Generation of MINDSTORMS
Posted by Marc-Andre Bazergui (bazmarc) November 27, 2015 ROBOT REMIX Series 1- BUILDING INSTRUCTIONS
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1x2 tile on top, 1x2 plate on the bottom, and a decorated (printed?) 1x2x2 brick in the middle.
They also made and gave out a limited run of the RCX in yellow - very detailed and very rare.