You are correct about the date - September of '67. Regarding rare and valuable, I would say yes to both. Searching the Bell-Matic forum will give you lots of info. Here is a good thread about the history of the Bell-Matic:
http://www.thewatchsite.com/44-bellmatics-forum/42477-bell-matic-history.html
Enjoy it and take care of it!
Dan
http://www.thewatchsite.com/44-bellmatics-forum/42477-bell-matic-history.html
Enjoy it and take care of it!
Dan