In good working condition Tektronix  TDS744A 500MHz 2Gs/s oscilloscope. 

The scope passes signal path compensation (SPC) as can be seen from the pictures. 

Options:

13 - RS-232/Centronics interface 

1F  - Floppy drive

1M - Extended memory

2F -  Advanced DSP math, FFT

Contact me if you have any questions.