This is pretty much a brand new unit. built in may (on spec sheet) has about 5 hours of use. RNVG housing is the most rugged on the market. 
the pics of the tubes look like theyre differnet shades of white, its very hard to capture what they actually look like with a camera. theyre both the same shade of white and look identical. no noticable blems in either tube.
this are fantastic NVG with great tubes and READY TO SHIP!!!! these all pretty much have a 6 week + lead time from all the builders. mine will ship next business day after payment received/cleared. I also have a PVS14 in white phospher for sale too. 
$7000 plus tax cash/zelle, cards add 3%

I ALSO HAVE A PVS 14 IN WHITE PHOS. FOR SALE AT A MUCH CHEAPER PRICE

out of state buyers- no tax but you will be charged actual shipping cost.