Unofficial LEGO Sets/Parts Collectors Guide - The very rare 10179 Millenium Falcon Set of 2007 has had some fakesters using real LEGO radar dishes, and adding fake prints to them. Here we
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LEGO® Corporate Alliance Tank Droid (7748): all details
LEGO PART 50990b Dish 10 x 10 Inverted (Radar) with Solid Studs | Rebrickable - Build with LEGO
LEGO PART 50990a Dish 10 x 10 Inverted (Radar) with Hollow Studs | Rebrickable - Build with LEGO
LEGO 10188 Death Star Ultimate Collector Series UCS Set Parts Inventory and Instructions - LEGO Reference Guide
Lego Part 50990a (1pc) Dish Inverted 10 x 10 Radar Hollow Studs 51373a | eBay