Thanks John, I sent an email to Mr. Leyvand and got the following reply:
"Thank you for your inquiry! I have never been a bow maker, so the idea of counterfeiting my name might be accurate. However, I believe I have seen your bow. If I remember correctly, your bow is likely to be made of pernambuco. If there is a luthier or violin maker in your area, they might be able to tell you better from seeing it in person. If you have any other questions, please feel free to let me know. Thanks!"
So, it looks like Ken nailed this one, although I was pretty sure he was right to begin with. I guess I'll go back to looking for the lost Strad violin in the attic
