3A  Folding Pocket Kodak, USA  1903-1904  (left)
First model - RAPID rectlinear lens with B&L automatic shutter
FILM: 188 Postcard-size or Kodak plate holder (for 2 plates) -see pic. at bottom

3A  Autographic Kodak Special, USA  1916-1924 (right)
First model with coupled rangefinder - Kodak Anastigmat f6.3 lens with Optimoo shutter
FILM: 122 Postcard-size

Approx. 3A cameras made: 360,000
  The first models had a combination back for 2 plate-holders 1