It was nice to see this thread - which my younger brother Greg (under the same user name) posted in a few years ago. Sadly, Greg passed away a few months ago.
Greg and I established a Facebook page for Spiratone a few years ago - and I have a bunch of scanned ads and catalogues that someone was kind enough to send us. Go to http://www.facebook.com/Spiratone and click on "like" if you wish!
We own spiratone.net so we will eventually (excuse me I will eventually) try to put the information up there, as I did promise Greg I would complete the task.
I'm happy to address any questions about Spiratone items as well, or at least try to. And I'll be using this user name so hope to hear from you.