Hey @theyoyoarchive, thanks for sharing this!
I have some recommended edits and additions for the 2021 butterflies:
- “2021- New mold for the Contemporary Butterfly, these have a 6 letter code compared to the previous 5.” — This was an initial rumor that didn’t end up being substantiated. As far as I’ve seen all new and previous generation butterflies use a 5 letter code, and we don’t know what info they encode.
Please feel free to link my write up on identifying the new-mould butterflies: An unofficial guide to identifying the new Duncan Butterflies
- “Some special editions from a Japanese store have new version of a Triangle Butterfly graphic in translucent yellow and black.”
These are called the YoyoManiax versions (I don’t think there is any harm in naming the vendor, just not using a link)
They come in fluorescent yellow, red and a blue (which is more green/blue than the standard blue butterfly), with black caps, and either gold or silver stamps. Might be worth giving these their own bullet point.