Description
These [and the 50 mBTC (Teslin Test Print)] were the second notes released from polymerbit. They were printed on Teslin not the polymer of the later notes.
There were 100 released and they came with the normal holograms polymerbit used, but they do not have the “Custom Edition” printed on them.
For more info see the wiki https://wiki.coin.community/Polymerbit_-_20_mBTC_(Teslin_Test_Print)
