This Illustration Rare card is numbered 153/132 in the set
In 1933 the company was taken over by ASS Altenburger
Sources: TCG Player (Base Set Mewtwo, First Edition Rocket's Mewtwo, Mew & Mewtwo GX, Mewtwo ex, Mewtwo Gold Star, Rocket's Mewtwo ex, Shining Mewtwo, Mewtwo e-Card, Rocket's Mewtwo [Winner], Mewtwo [XY Evolutions Staff Prerelease]), PriceCharting (Base Set 1st Edition Shadowless Holo Mewtwo, Mewtwo Gold Star)
Oathsworn Knight I have always thought highly of this 3-mana creature and I think with its two devotion count for three mana, could see some play in a mono-black devotion deck
If it's heads, that would count as 20 for the replaced d20 roll, which would count as heads for the originally replaced coin flip