Circa 1940s.  (Photo by Mike Maguire. Used with permission).

More of Mike Maguire's key collection can be seen here.

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Contributors and Credits:
 

1) Mike Maguire <mike.maguire(at)btinternet.com>
http://www.flickr.com/photos/m0dvo/5817399499/in/set-72157594585821587 PS213A cover off
 
 

Nov 16/12