Perrine has made fly boxes for many years, decades really. I see
l them around sometimes. Older ones in good condition may be valuable. Thats really a relative thing though. Look up Ebay and check out the fishing related stuff for auction. maybe even find a list of just fly boxes- it will be a big job as they usually list allot of stuff. You might get an idea that way. A man named Alan Liu wrote a good reference book on antique sporting collectibles, might look that up by author name. He's on the www too, has his own fishing website, fly stuff etc.He's a renowned expert on sporting collectibles.