I have no idea what publication these Praktica pages came from but they are very informative. I have used the original scanned pictures but retyped the text for clarity.

Praktica - PLC2, PLC3, L2 and LB2:

The main features of these models and the earlier versions are as follows:

  1. Exposure counter
  2. Shutter speed knob
  3. Transport and shutter tensioning lever
  4. Film speed setting
  5. Accessory shoe
  6. Flash contact
  7. Rewind crank
  8. Meter change over switch (on LCs)
  9. Carrying lug
  10. Shutter release with lock
  11. Self timer release button (on LCs)
  12. Self timer lever (on LLC)
  13. Electrical contacts for full aperture metering (on LCs)
  14. Automatic diaphragm mechanism
  15. Mirror
  16. Cassette chamber
  17. Metal-bladed shutter
  18. Tripod bush
  19. Battery compartment (on LLC)
  20. Rewind button
  21. Take up spool with quick load device
  22. Pressure plate
  23. Stop down switch
  24. Aperture control
  25. Depth of field scale
  26. Focusing mark
  27. Distance scale
  28. Focusing control
  29. Meter change over switch symbols (on LCs)

Additional features of LB:

  1. Meter indicator
  2. Aperture indicator
  3. Shutter speed indicator
  4. Film speed setting
  5. Meter window