« on: December 08, 2014, 08:31:28 AM »
Yes, they are rare - Mathias Münch and me has compiled this list of A4000T owners:
http://www.bigbookofamigahardware.com/forum/yaf_postst27_CBM-A4000T-serials.aspx - less than 20 known owners.
In an email from 1996 send from Peter Kittel to a german A4000T user, Peter wrote "that only ~35 Machines got deliverd
WORKING to customers, ~35 where NOT working. All in all only ~70 machines left Commodore for customers."

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BigBookOfAmigaHardware.com. C A4000T/060/PIV, 4xA4000/040, A4000/030, 2x A600, 5 x A500, 2xA500+, 3xA2000, A1200/030@50/4mb, A1200/ACA030, A1200/030@50/32mb, A1200/030@50/32mb, A1200/020/4mb, 2xA1200/020/8mb, 2xA1200, CDTV, 2xCD32, A1000, 4xC64, C128D, C128 + many more