How I Ended Up With the World's Cheapest Mr. Gold - BrickNerd - All things LEGO and the LEGO fan community
1 x LEGO Minifigures Series 18 - Classic Police Officer - RARE Ltd Edition | eBay
10 Rare & Expensive LEGO Minifigures You Might Own - Rarest.org
Unofficial LEGO Sets/Parts Collectors Guide - Prototype Minifigure head? At the LEGO House they show many prototype early Minifigures, including prototypes of the 1x1 round head with a 'non-rounded' top. My German
LEGO - Star Wars - Figure prototype TRANSPARENT DARK BLUE - Catawiki