Here's some info on the different logo for the ME basses: [Invalid or Expired Link Removed]
"Some of you may have noticed the different logo on the headstock. Please permit me to explain… About 15 years ago, when I went to trademark Sadowsky in China, I discovered that a pirate had trademarked Sadowsky before I could. I have been fighting for the return of my trademark for the last five years. We won the previous round on the basis that he has never used the trademark. However, on the last possible day, he appealed the decision, and until the appeal is heard, he still owns the mark. As a result, I have trademarked RSD (Roger Sadowsky Design) and will use that in conjunction with the MetroExpress until the issue is resolved, which I am confident it will be."
Thank you for your kind reply, but my questions were related to Metro basses made in Germany.