Sinclair ZX Spectrum 48k edition 3b in working condition (brand new keyboard membrane) PLUS EXTRAS

This is for a well looked after ZX Spectrum 48k edition 3b (rubber key).  It works well, interfaces with modern TVs via RCA to HDMI converter (provided) and has the inefficient 9v regulartor and heat-sink replaced with a modern efficient Tracopower component that doesn't generate heat (and doesn't destroy the membrane over time!).  The membrane has been replaced with a new membrane from RWAP UK.  Comes with original power supply, in the polystyrene box and with cardboard outer (cardboard is not in the best condition).

Additional gadgets included:

Kempston joystick interface

Interface 1 (not working - needs attention)

Microdrive (may be working but requires the Interface 1 to work) and microdrive cable (very rare)