These are "trench" binoculars. They were designed to allow spotters to spot for artillery, mortars etc without having to stick their head out of the trench, pillbox or bunker. They were meant to be mounted on a tripod. This may not hurt the value that bad though as most I have seen have the tripod and no case or they don't have the tripod or the case. Ebay prices are anywhere from $400-$1400 so you will need to do some searches and watch some auctions to get a value. The show up on gunbroker as well. They are rare, but they are readily available as most people want money more than a bigass pair of ugly binoculars.
I own firearms not to fight against my government, but to ensure I will not have to.