This fantastic creation is from Mark's geometric series, but you'll notice a not-so-subtle difference - it's NOT black and white like the rest of them! Back in 2005 Mark decided to take a little side trip with these and made this incredible yellow and black geometric, the amazing 'Warning Ball', guaranteed to play tricks on your eyes, ha ha. It is HUGE and AMAZING. Very few of these were made, and this is a VERY rare opportunity to own one of these!! Signed 'Matthews 2005'.