H. Moser & Cie., which has not fallen out of the agenda for a while with its unique designs and contradictory appearances, steps way forward among the Moon Phase featured watches with the Endeavor Perpetual Moon Concept Aventurine model, which has a sparkling aventurine glass dial inspired by the night view of the sky.
Like many other models of the brand, Endeavor Perpetual Moon Concept comes in a case that can be considered large. Available in 5N rose gold and stainless steel options, the case is designed with a height of 42mm and a thickness of 13.1mm. Sapphire crystals are used on both sides of the case, which has a simple yet powerful stance with its curved design and flowing lines.
The dial is home to a background made of aventurine glass, also known as goldstone, a man-made material produced by mixing fine metal particles with blue glass. Aventurine glass is a frequently preferred material in watchmaking, especially for the moon phase and calendar displays, due to its striking, iridescent reflections that create the impression of a starry sky. According to legend, aventurine glass was discovered accidentally in the 16th century on the Venetian island of Murano, when copper plates fell into a barrel containing molten glass. The material takes its name from "per avventura", which means "by chance" in Italian.
As with the other models of the brand's Concept series, there is no text or logo on the dial. The minimalist design continues with the Moon Phase display, which consists of a circular display. In addition to the central hour, minute, and seconds hands, a short central hand serves as a day/night indicator.
The model is powered by the Caliber HMC 801 with a Moon Phase indicator developed by Andreas Strehler, who also designed the brand’s perpetual calendar movement that is considered a milestone for the brand. The hand-wound movement operates at a frequency of 3Hz and offers a power reserve of 7 days thanks to its double-barrel system.
While the standard moon phase indicator is based on a 135-tooth drive wheel to achieve the accuracy of a day in 122.5 years, Moser uses a more precise gear ratio that more closely matches the lunar cycle, providing an accuracy of one day in 1027.3 years. The Moon Phase indicator is adjusted by the pusher on the side of the case.
Both models in the series are limited to only 50 pieces. The models come with an alligator leather strap accompanied by a pin buckle matching with the case material.
