A variation on an early button rim. I'd think that's correct. Given the wonkiness and wigglyness, and the cloudy colouring it's unlikely to be a late variation tending towards a perfume-bottle-raised-rounded-rim.
I've never heard of anything about thicknesses of the stripes though - coloured ones are scarce, and...and... I don't have one with coloured stripes and that's all I know... mutter... grumble...
