I would avoid without seeing it better. There are plenty of authentic jaggers out there including signed books and lithographs (expensive though) on their own website or photos ,LPs through legit sellers. I always suggest saving up and buying quality.
Thanks for your opinion. Even if they are expensive, I should buy real one. I bought Mick's Autograph form The Burusel Affair. Being compared with my own autograph, M's shape looks strange.