![](http://www.alamy.com/thumbs/6/064C5B5D-B0C8-4470-BAC1-91855A3C3C2E/2GGBP3G.jpg)
3-1/8in. diameter; no face-mechanism visible; air-driven.
Size: 3643px × 3643px
Photo credit: © Heritage Images / Alamy / Afripics
License: Licensed
Model Released: No
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