I bought a set of springs from Walcks about four years ago for my 3B. They are stamped USA. They are holding up fine.
Here's the description from their website for a front spring set-
"Spring Assembly Front 10 Leaf USA Made MB, GPW, CJ2A, CJ3A, CJ3B, DJ, M38, Pick Up Truck, Station Wa "
It looks like all their springs are made in the U.S.
