Chopard L.U.C Perpetual Twin vs. IWC Portugieser Perpetual Calendar: A Collector's Debate

Key Points from the Discussion

• The Chopard L.U.C Perpetual Twin is favored for its superior finishing, though some find its dial cluttered and the big date display passé. The IWC Portugieser Perpetual Calendar's small moon phase is a significant drawback for some.
• The Chopard L.U.C movement, particularly its base caliber, is praised for its early adoption of a double barrel system for extended power reserve and a cam-based winding system similar to IWC's Pellaton, giving the micro-rotor a distinctive 'jumpy' rotation.
• Chopard's decision to discontinue Geneva Seal certification for its L.U.C movements, in favor of Qualité Fleurier (QF), is noted as a potential political or economical choice, despite the movements retaining the capability for such high-level finishing.
• Some collectors argue that 'fashion house' brands like Chopard and Cartier often exhibit superior finishing on their high-end watches compared to some traditional haute horology maisons.
• The Jaeger-LeCoultre Master Ultra Thin Perpetual in stainless steel is proposed as a strong alternative at a similar price point, offering a compelling blend of elegance and horological merit.
• A question arises regarding the inclusion of GMT functions in perpetual calendars, inquiring whether it's a specific model type or a discretionary design choice by manufacturers.