I'm sure the prices will increase as the supply decreases, but I think it'll depend what you're looking for. I'd bet that dented, dinged, scratched up, used for work deuces and CUCVs won't increase in price that much, especially CUCVs. Original, low-mileage, shined up for parades type trucks will become fewer and farther between- but still, the trucks coming out of GL aren't exactly show quality.
Look at the old Jeeps for an example. You can buy one that's in good running condition- but not great, showing some wear- pretty cheap. A fully restored, all original example will cost considerably more.
We're seeing the same thing with the first-generation Miatas. They haven't been made since 1997. Low-mileage, pristine examples are becoming more and more expensive. If they were a special edition or had rare options, they're more valuable. Prices on daily-drivenBut, you can still buy good runners pretty cheap- I sold my all-original red 1990 model, with most of the good options, for $2900 last spring. Paint was REALLY good, tires were good, that sort of thing. Now, if it'd had less than about 20,000 miles on it, it would have been a $8,000 car. Less than 10,000 miles, a $12,000 car.
I expect the same thing with the Deuce and CUCV- more a growing gulf between the "pristine" ones and the "well used" ones than a widespread uptick in price across all of them.
By the way, Bruce, I grew up in Ellicott City.