Here's one for those in Germany...
https://www.ebay.de/itm/SCHNEIDER-AMSTRAD-CPC-664/303033070215?hash=item468e2db287:g:iXQAAOSwseFcQOnM:rk:10:pf:0
As a side note, I noticed the serial number on this one is only 8 different to the one I have from 2003.
The serial in the above ad is 78320 K32-54 and mine is 78328 K32-54...so close :)
Cheers,
Shane