I've just spotted this Sharon Tate autograph on Ebay. Item :223284215104 ( not dedicated) My initial thoughts were that it looked very good. I went on RR auctions to look at some comparisons and I found one that's rather too close !
Catalog 431 ( jun 2014) sold for $6,679.93. Yes its dedicated but unless my eyes are deceiving me the two signatures are identical. Take a look..