While here in Zurich on a business trip, I found a musical instrument store that had 2 double basses. Both had a label that said GEWA. I had never heard of that name before. They were asking for 2,500 CHF and 3,500 CHF for these basses at the shop. They appeared to be plywood with no purfling, just painted lines. They sounded OK, nothing great though for the price they were asking. Although, everything in Zurich is very expensive.