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Posted By: J Hull

This thread gets better and better.
Great find, Ted.

Elliot and Scott B, I know with a thread this size it's almost impossible to see every post let alone remember them, but I made the argument some ways back that the "dove" variation is the result of an additional layer of ink being used that was not being used on the earlier "non-dove" version. Of course, the chromolithography used to produce the T206s required a new printing plate (or stone) for each color. I've been hoping that someone would posit a theory as to why an additional plate was introduced to the process for Ritchey somewhat midstream (apparently at least part ways through the P350 print run). Are there any brave souls out there who care to hazard a guess?

Btw, if we're looking for changes in blue ink, we should also keep in mind that green was created by overlaying layers of yellow and blue ink, so there may be changes to the color green as well.

Jamie