I have narrowed my collecting down to a handful of sets. The ones that qualify within your parameters are:
T206.......501
T212 (only 1910: The Slogan Backs)......111
T210 141 across only 6 Series. I have no Series 4 nor Series Eight
N172.....1 ( I bought it, didn't love it but, will keep it just the same)
The other sets are;
T201 44
M101-4/5......59
T207.....104
That is enough to keep me busy until I pull the plug on collecting or they pull the plug on me........
