Check out a site called " The Collectors Guild". They're out east and if you browse their website in the Nazi swords and daggers section, you should get an idea of value. They won't tell you value unless you send it to them. They sell on consignment. You can look at ebay, but there are so many fakes out there that it makes browsing difficult. Nice find, but get the provenance (ie: find out who picked it up and when). All the information you can gather on it's origins will help you in value and ensure that you're not lowballed should you decide to sell.