According the their website, they are manufactured in Beaverton, Oregon. But there is an increase number of "fake" coming out of China, and Leupold will not service them and are not covered under their warranty.
If you think you may have one from China contact Leupold. Leupold employs serial number tracking for all its riflescopes, so if a customer finds a scope that is suspect, he or she can simply write down the serial number and call 1-800-LEUPOLD to confirm if it is indeed authentic.
You can also contact them online here. http://www.leupold.com/hunting-and-shooting/contact-us/service-support/
Leupold still manufactures the vx iii and have been since at least 2005
I have a 1989 Leupold Catalog that has, Leupold: Pronounce it "loo-pold."
Andreas Leupold is 189 cm.
Matthias Leupold was born in 1959.
Herbert Leupold died in 1942.
Herbert Leupold was born in 1908.
Jacob Leupold was born in 1674.
Jacob Leupold died in 1727.
Go to the Leupold website.
Andreas Leupold was born in 1959, in Berlin, Germany.
Horst Leupold was born on 1942-01-30.
Harald Leupold-Löwenthal died in 2007.