I have just reorganized the early Monaco section (Reference 1133) to show the "Chronomatic" version of the Monaco, as well as two transitional models.
The first Monacos were marked "Chronomatic" above the Heuer logo, with the "Monaco" name appearing on the bottom of the dial. The hands on these first Monacos had squared tips, and the dials were a deeper, darker blue than later models.
One of these transitional models (shown below) has the squared hands, but does not have "Chronomatic" on the dial. Another transitional model has the "Chronomatic" on the dial, but the later style hands (with pointed / triangular tips).
Click the image (below) to see the new section.
Thanks to AMH for the photos of this unique Monaco.
Jeff