in 2006, there were indeed a few marbled 1/1 zyurais and mavs offered to 'jo-lian' (regular customers), it was for his 1st anniversary. i thought he mentioned he offered 3 Zs to different people at that time. i think he could have painted more at that time and kept them till later dates like what you suspected. whoever sold these to mandarake is close to cronic for sure, or could even be cronic himself. it is a pity cronic's life got messed up, to me his paints are still one of the best !