The LAPD and the FBI are currently on the case of half a million dollars worth of stolen Leica Summilux-C (cine) lenses. This occurred on Sunday, December 1st, when a shoot was being held by Doug Emmet in Los Angeles. It's being reported by CPT Rental Inc. and with any luck we can only hope that they will be recovered as news spreads.
So be very cautious if you do happen to come across any great deals for these lenses. In particular, here are the ones in question along with their serial numbers.
Accordingly, here is a flyer put out by the company with contact information as well: