Purple Hyatt House Brick

THIS IS AN ACTUAL BRICK FROM THE
PURPLE HYATT HOUSE HOTEL LOCATED
AT 4500 W TOUHY AVE, LINCOLNWOOD, IL
IN 1983 IT WAS THE SIGHT OF THE
GANGLAND KILLING OF TEAMSTERS
LAWYER ALLEN DORFMAN.
THE BUILDING WAS DEMOLISHED IN 2013,

Submitted by @maxeschavez.
See also this episode of 99 PI.