Hi Ted, welcome to FiberglassRV... we're glad you're here.
Now, there is a long thread with information exactly like you're looking for and probably more information you care to know. But, it may be worth your time to read: http://www.fiberglassrv.com/forums/f...nts-26760.html
it's many pages long, so bring out the popcorn and get ready to educate yourself!
Here's a pictures of the badge for you!