I got lucky with a local listing. I can't afford ebay anymore. A good 321 is like throwing chum in the water.

 

Your question has been addressed but I don't think I'm being exclusionary using an abbreviation like "CB". Trust me, I'm decades behind many of these guys on the learning curve when it comes to Speedmasters. What's great is that the members here have already done the heavy lifting if you're trying to learn or catch up. Already mentioned but Spacefruit's Speedmaster101 site is an invaluable resource and a quick search on OF for "CB" provides all you need to know. Not trying to be an ass or show disrespect, but I always assume someone has already asked the question I have in mind so I start with the OF search option first.