BTW, the crystal seems to have a greenish tint to it.
Yea, I was also wondering how the green tint got there..

Anyway, I started this thread with the hope of seeing more Seiko Marinemaster tuna cans from other members...

Sorry, late on reporting
Having heavy meals all the time
The AR coating on my tuna its yellowish to little green
More like some of the japan made lens coating
Very different from Swiss blueish AR coating
Mayb lighting causing it look green for this occasion
It's yellow under most lighting