With the introduction of the Alpa model 11si, the CdS-cells (cadmium-sulphide) that had been used since model 9d were replaced by Si-cells (silicon). The Pignons stand at the Photokina '76 in Cologne presented yet another surprise to visiting aficionados: a camera from Japan bearing the label: ALPA Si 2000. 

The new model was built on the Chinon CE II Memotron with M42-screw-mount. The metamorphosis from Chinon to ALPA was accomplished through a few deft changes on the outside of the camera. Brilliant marketing idea or an own-goal against the image of a superior brand? In any case, this escapade ended when both the Si 2000 and its successor the Si 3000 with K-bayonet-mount (introduced 1980 and based on the Chinon CE-4) ceased production some years later.