To be honest, there are too many to be interesting IMO. It's always the final digit in the date and nothing else, nothing. It would be like collecting every single variant of 1861 and 1862 pennies where the position, angle, space, slant, of the final digit varies with just about die used. Once you started you'd never stop. No disrespect intended to Michael Gouby but recording all these micro differences as distinct varieties doesn't seem to be a worthwhile exercise. That's my two pennorth anyway.