Hi Michael, it appears through further research I may have been wrong re: the 20" machine.....What I took from the not very clear pic was an eight blade mower indicating a 20" cut....was in fact a 10 blade, 17" machine.
To confirm this, I then searched the Rover 45 Parts List, and found the 2 cylinder reels mentioned, the 6 blade and the 10 blade.....
This indicates that the 20" and the 14" mowers were discontinued once the Scott Bonnar logos disappeared. cry
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin