Hello,
Want a non-yellowed original 1987 amiga 500 with the capacitors replaced, clean and solid drives, all whats needed for the best ntsc/pal switching, and any other basic essentials to get started. (again nothing discolored or yellowed)
Have 2 addresses, near europe and within the U.S, and I travel in addition, so I'm flexible with shipping.
This is just to clarify that shipping shouldn't be a problem.
What you want is actually self-contradictory.
An original 1987 A500 uses either an 8370 (NTSC) or 8371 (PAL) Agnus, so ntsc/pal switching is not possible.
Also "original" is somewhat ambiguous with respect to motherboard - in the US it'd most likely mean an early rev5 motherboard, in Europe a rev3.
But rev3 motherboards, despite being the "earliest", lack the capability to turn the audio filter on-off, and typically carry a bugged version of Gary, and can be pickier with peripherals (timing and noise issues). Rev5 ones fair better and typically have a factory fix so, even if they have the bugged Gary, they operate correctly.
Rev5 definitely grounds Agnus pin41, rev3 probably does the same. So if you install the only out-of-the-box compatible Agnus, the 8372A (violating the "originality" of the A500 to support PAL/NTSC switching), it'll always boot in NTSC mode unless you bend pin41 inwards or otherwise isolate it (more hacking).
Unless you are specifically after some early A500 "niceties" (the hi-tek keyboard, the original bulky 1.6" Chinon or Panasonic drives, the C= embossed case, the heavyweight PSU, the Hong-Kong mouse, the early spiral-bound documentation, the 1.2 KS/WB) I'd actually recommend you got a European rev6A A500 with 1.3 KS/WB "enhancer software" pack, the 8372A Agnus, the 5V/4.5A PSU version, the Malaysia mouse, a boring Mitsumi keyboard and ideally a slim 1" Teac/Mitsumi drive mounted on a support base.
Definitely less "museum/exhibition" value but much greater usability and maintainability, esp considering:
1. Much higher chances that you find a complete package in the desired condition
2. Solid expandability pathway
3. Availability of spares (mouse switches, keyboard spares, floppy drives)
Good luck