Pyramid BRF-1601 VHF in band notch filter USED

Used condition removed from various decommissioned fleet vehicles. This is a VHF radio notch filter. We have no knowledge of the correct operation or use of this device. We have multiple in stock and no testing was performed. Sold as is with the knowledge these should only have been removed from service due to radio upgrades. 
Model #BRF-1601
Multiple in stock and may not receive the exact dated or pictured unit. All will have light cosmetic wear from use including scratches, scuffs, dings, grime, tape residue etc.