Looks good Chick, thanks for the comparison - certainly getting closer to the original aren't they.
I don't have one of the latest repro pieces myself, but from the photos, it looks like there are a couple of differences that are probably only noticeable when side-by-side with an original:
- the orientation of the 3 dots relative to the vacuum hose spigot varies (but that 'clocking' may even vary from valve to valve as part of the manufacturing process to join the two parts of the valve body?).
- some original valves seem to have a letter or number on at least one of the dots.
- the dishing of the hole in the center of the original valve seems a little deeper than on the new one.
- the inner raised ring appears thicker on the reproduction.
- the original valves seem to have a 'wavy' line (highly technical term!) around the face, between outer and inner raised rings; can't see clearly if the repro also has this.