Sorry, but I doubt anyone can answer your question. You'll increase your chances of getting a response if you read the section in the Frequently Asked Questions section that tells what others need to know about your bell in order to identify it. viewtopic.php?f=20&t=639
Often people with questions about value look on that popular online auction site to see if there is a bell like theirs listed there and then watch the auction to see what the bell sold for. There are usually a lot of Sarna bells listed there.