[need help] Tracing raster-to-vector process

http://u.pc.cd/RNM7 stamp.svg 5.5 MB

It is a bit of a monster, just the stamp, made with Gimp and Autotrace
see: Breaking Down a PDF for the Gimp plugin

Put the image into 256 indexed mode, scaled x4 interpolation none to avoid antialiasing and those white artifacts Inkscape says 22157 objects.