Feast y'ur eyes lads. These Protar's with the yellow and purple dots that tout the coatings post WWII are rare in the extreme.
Especially the BIG ones.
This one is 600mm, 485mm and combined makes 305mm. It looks flawless to me. It is complete with the extra ring that finishes the front barrel when using a single anastigmat at the rear. Yes, I have the flange. The shutter runs like new.
You probably won't buy it at my asking price of $1800, but at least you got to see one!