Our demo Brompton was clipped from in front of Millennium Park this morning while a couple had it out. It is a 3 speed with "M-Type" bars and is in a primer grey with an orange "Demonstrator" logo on the TT near the ST. The bike in this color is only available to Brompton dealers to be supplied as a demo for prospective customers.
If anyone spots it, please throw a lock on it and call Turin bicycle on Damen at 773-271-3141 or email at firstname.lastname@example.org
I would suggest making the police report number available and urging a call to 911 as a first course if the bike is spotted.
Also, be aware Brompton has it's own online database for stolen bikes: