please help: unknown antique silver

CAN ANYONE HELP? I have a gorgeous 4-piece silver tea set that I can’t find anywhere on the internet. Replacements.com has non in-stock of my pattern, but they seem to think the pattern # and year of manufacture could be the same. It is AURORA 1869. Any help would be greatly appreciated. -Betty
Ok, I managed to find out it was made in Aurora, IL in 1869. How do I find out its value?