I have an internal scanmagic for sale.
It has the ramchips for more info see amiga hardware database.
One notion it hasn't got the original external part anymore.
It now has a metal casing sprayed white external and a handwired experimentprint as the original had gone flakey.
Works 100% and it looks neat.
Can be used in a amiga1200 or amiga4000.
Make me an offer on PM.
Can send pictures iff requested.