I'll to do it chronologically, starting in 1965:
Lowry organ and amp (don't remember the model)
Bigger Lowry organ and leslie 1970
Newer Lowry organ and 2 leslies 1973
Yamaha organ 1979
Great Big Yamaha Organ 1982
PSR70 with DX7 and RX15 drum machine ?1984
PSR6100 ?1985
PSR6300, I think, and Alesis drum machine
and Yamaha V50 and TX81Z module and FB01 piano module ?1988
Technics KN800 ?1990
Technics KN1000 ?1992
Technics KN2000 ?1994
Yamaha PSR 500 ?1994
Yamaha PSR510 ?1995
Yamaha PSR620 ?1996
Technics KN5000 (dates too confusing)
Roland G800 1997
Yamaha PSR8000 1997
Solton X1 1998
Yamaha PSR740 1999
Yamaha PSR9000 1999
Korg PA80 2000
Yamaha PSR2000 2001
???? 2002
DonM