This is called a "Size 0 Lift Arm Lighter".
They made them in 5 sizes from the "0" up to the "4" with the "4" being 2-1/2" in size.
It was made in Japan, (hard one to guess there)
It was made from 1952 to 1969
I'd say toward the '50's because of the larger key-chain hole, the newer ones have a smaller hole. (like mine)
Before 1945 they generally don't have any markings
Before 1952 it would have said "Made in
Occupied Japan"
After 1969 it will say "
Made in Japan" (A good tip to estimate the age of a Japanese lighter.)
It was probably made by the K.K.W. Co.
80% of this type Japanese lighters were.
They used several brand names including "Express", "Gem" "Prince" and several others.
It is hard to determine condition from these pics, but I'd say around 80% of the finish is left.
Do you have the refill plug? It looks like it is missing, (or you took it out) in the pics.
The value? That's hard to say without seeing it. (there were tens of thousands of these produced, but because it is so small, most were lost years ago) Also if the plug on the bottom is missing it will cut the value by 1/2. My best guess is (if you have the plug) around $50.
If the finish is like new around $100. (condition is a major factor in the price)
Also 90% of old lighters have the flint stuck in the flint tube. If it will not produce sparks and putting a new flint into it won't allow the spring to screw all the way in, it probably does.
If this is the case, PM me and I'll help you get it out.
Here's a couple pics. of my "Size 0" (100% finish remaining)