P6108
The Tektronix P6108 is a 100 MHz, ×10, passive, miniature modular probe, for 1 MΩ scope inputs.
The impedance at the tip is 10 MΩ in parallel with 10.5/13.0/15.5 pF (for 1/2/3 m cable length, respectively).
It has a BNC connector without a readout encoding pin.