This is for two Polymerbit notes, the 2017 & 2018 50 mBTC notes.
50 mBTC 2017 (Teslin Test Print)
50 mBTC 2018 (Test Print)
The 2017 note is one of two Teslin notes, the first notes printed in house at Polymerbit.
Includes holograms. The 2017 50 mBTC was released before they had the custom Polymerbit printed holograms, so it does not have any printed text.