Need help identifying this watch. It's 9k rose gold with a telephone dial and Montal strap. The number in the hammer head is unfamiliar, it looks like a "1" followed by a "C" and the third character resembles an oddly shaped "y". The watch is definitely from 1927 or earlier, as indicated by the engraving on the caseback. The Roman numerals on the dial are faded but still legible, no other markings are present on the face. The movement shows no manufacturer mark or number except on the upper side with an "L" and "AS". Hope someone can shed some light on this one.