Why did 405 look so good?

[Crackle]

From what I can remember 405 lines TV always looked good; bright, sharp & with good contrast.

Did they? Maybe when the tube was new, but the 405 TV's I remember were hopeless in daylight and if the contrast and brightness was turned up they normally went out of focus and were always picking up interference when a car went by.. As already mentioned they were OK at night in a dimly lit room.
But having said they they were adequate for their time and one got used to the picture.

Mike