@michalval
F-11
110.253
Carrera Reference 110.253 BN has deep blue dial luminous metallic finish (Cotes de Geneve), with vertical line dividing the dial into three areas; matching deep blue bezel; fourth execution hands (painted steel, with off-white edges and full-length lume)
1978
Buren 12
F-12
110.253
Carrera Reference 110.253 G has third execution dial (luminous starburst finish); fourth execution hands (painted steel, with black edges and full-length lume); the word "Carrera" is narrower than on other models, and does not extend beyond the Heuer shield.
1977
Buren 12