Thank you very much for your research on this bottle--it definitely narrows down the time frame!
I will certainly drop you a line and we can chat about our respective collections. I'm always on the lookout for old bottles and it would be nice to chat with a fellow collector!
Perhaps I could pick your brain for information on a bottle of King George IV I've gotten recently? I'll post a thread tonight and you can check it out...
Thanks again for all your help!