Telefunken ELA M 260 Master Stereo Set

I have one new set of Telfunken ELA M260 small condenser microphones. New used. I bought these for a recording project I never did. Original box/. Save $600.00 Type: Vacuum Tube CondenserPolar Pattern: Cardioid, Omnidirectional, HypercardioidFrequency Range: 20 Hz – 20 kHz, ±3 dBPower Source: External Power SupplyCapsule: TK60, TK61, TK62 – Edge Terminated Small Diaphragm, Thread-onTube: NOS Philips 5840WTransformer: TELEFUNKEN Elektroakustik T60Sensitivity: 16.5 mV/Pa, ±1 dBTHD at 1kHZ at 1Pa (Amplifier): < 0.15%Output Impedance: 200 ΩMaximum SPL (for 1% THD): 135 dBS/N Ratio: 83 dBASelf Noise (Amplifier): 11 dBADimensions: 140 mm L x 20 mm DiaWeight: 116 gIncluded Accessories: Tube Mic Cable, Power Supply, Shock Mount, Foam Windscreen, Carrying Case