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I picked up a 200-600mm f/9.5-10.5 and it is hilarious for several different reasons.

It is huge.



It's actually about the size of my arm.



The design is pretty rare, about 1600 made, and this version (marked in mm instead of cm) is rarer still, with about 300 made.



It has some pretty engraving:



But it has not just one engraving error:



But two!  This is my favorite engraving error I've seen.



I'm lens mad in the USA so who am I to judge?