Anatomy of an 11AERC

I though someone might like to see the 11AERC "Wrist Alarm" movement broken down and reassembled. Aside from the Chronometer movements it is by far one of the more intricate movements with lots of parts for the alarm setting and normal setting and winding. The watch uses one mainspring to run the alarm unit and the watch operation. 

If you have questions, feel free to PM me. I have been through several of these now and will be posting the restoration results in the near future. This one is very clean and runs beautifully!

Plate Bridge Side:

Plate Dial Side:

Partially Complete:

Nearly Complete:

Complete - Bridge Side Assebled:

Dial Side Partially Complete (Note the two Stems and two Setting bridges/yokes):

Dial Side Complete:

bobbee's picture
Posted February 16, 2013 - 2:18am

Lovely porn!
Did not know it ran on a single mainspring, that is a very tidy little movement.
Thanks Rob, good job.

William Smith's picture
William Smith
Posted February 16, 2013 - 2:51am

Club 5000Panel Member

Great job and info.  I really appreciate you doing this and takign the time to post the photos. Thanks man...  I had no idea it ran on one mainspring either... 

Reverend Rob's picture
Reverend Rob
Posted February 16, 2013 - 11:23am

Panel Member

Just like a tiny little alarm clock. This isn't the Junghans ebauche they sometimes used, this is an all-Bulova movt. It is things like this that make modern watch afficianados sit up and take notice- in house movts. All the more impressive when you consider that companies like Breitling and Panerai have only recently made their own movts. 

Posted February 16, 2013 - 2:41pm

Thanks all for the positive comments. I have always thought the website could be used to share knowledge and information and be less model-ID oriented. This is one of my contributions. The photos are a little blurry as I had a bad angle apparently...but I think it shows the movement OK. I will be happy to show you the completed watch on a few weeks. I heard rumor that JFK had a Wrist the 11AERC has always intruqued me.

Carry-on Intrepid Bulova Collectors! Rob

Posted May 10, 2017 - 1:57pm

Amazing post (I'm aware it's from 2013). Does anyone know if StoddRob is still active? I'd love to commission his assistance to give my recently acquired 11AERC Wrist Alarm a similar treatment.

Geoff Baker
Posted May 11, 2017 - 5:47am

Club 5000Panel Member

Hi Tommy - you can send him a message through the myBulova messaging system to find out. Float over the home link at the top of the page and click on 'My Messages", I bet you can figure the rest out from there.

Posted May 11, 2017 - 10:41am

I PM'd him before I wrote the post. Since he didn't reply, I figured I'd ask the community if he was still active. But I appreciate your reply nonetheless.