APS Factory Longines Moonphase 40mm L899.5
The APS Factory Longines Moonphase combines a 40mm case, 11mm case thickness, moonphase display, blued leaf-shaped hands, and a custom integrated L899.5 automatic mechanical movement.
A key feature of this version is the integrated movement architecture. The L899.5 configuration incorporates a compact bearing system and decorative Geneva-style striping around the visible movement surfaces, providing both mechanical and visual details specific to this APS version.
40mm Case
The watch uses a 40mm case with a thickness of 11mm.
These proportions create a relatively slim profile for a mechanical moonphase watch while providing sufficient dial space for the calendar and moonphase presentation.
The 40mm diameter also gives the dial and its traditional leaf-shaped hands room to remain visually balanced.
Moonphase Display
The moonphase complication is one of the defining features of this model.
Rather than functioning only as a decorative element, the moonphase display is mechanically integrated with the movement and changes progressively as the mechanism advances.
Its traditional character works particularly well with the classical proportions and blued leaf-shaped hands.
Blued Leaf-Shaped Hands
The dial uses distinctive blued leaf-shaped hands.
Their slender profile and tapered shape provide a traditional dress-watch appearance while creating a strong visual contrast against lighter dial configurations.
The blue finish also adds a recognizable detail to the otherwise restrained dial architecture.
Custom Integrated L899.5 Movement
The watch is powered by a custom integrated L899.5 automatic mechanical movement.
Unlike an architecture where the moonphase display is treated primarily as a separate decorative layer, this version incorporates the relevant functions into an integrated mechanical configuration.
This allows the movement architecture and moonphase functionality to operate as part of the same overall mechanism.
Compact Bearing Structure
The L899.5 movement incorporates a compact bearing system within its automatic winding architecture.
This bearing structure forms part of the movement’s mechanical construction and is one of the specific structural details emphasized in this updated APS configuration.
Geneva-Style Movement Decoration
Visible areas around the movement feature Geneva-style striping.
The repeated parallel pattern provides decorative finishing across the movement surfaces and adds visual detail when the movement is viewed from the rear.
Combined with the integrated L899.5 architecture, the finishing gives the movement a more complete mechanical presentation.
Technical Specifications
Specification Details
Factory APS Factory
Brand Longines
Model Moonphase
Case Diameter 40mm
Case Thickness 11mm
Movement Custom L899.5
Movement Type Automatic Mechanical
Movement Architecture Integrated
Complication Moonphase
Bearing Structure Compact Bearing System
Hands Blued Leaf-Shaped Hands
Movement Decoration Geneva-Style Striping
Integrated Moonphase Architecture
The main technical characteristic of this APS configuration is its integrated L899.5 movement.
The moonphase mechanism forms part of the overall mechanical architecture rather than relying solely on the visual appearance of the dial.
Together with the compact bearing structure and Geneva-style decoration, this gives the movement itself greater relevance when evaluating this particular version.
Wearing and Care
At 40mm × 11mm, the watch maintains relatively restrained proportions despite incorporating a mechanical moonphase display.
When adjusting the calendar or moonphase functions, the crown and adjustment mechanism should always be operated gently. Avoid forcing an adjustment if unusual resistance is encountered.
The watch should also be protected from strong impacts and powerful magnetic fields.
Frequently Asked Questions
What is the size of the APS Longines Moonphase?
The case measures 40mm in diameter and 11mm in thickness.
What movement does this version use?
It uses a custom integrated L899.5 automatic mechanical movement.
Is the moonphase functional?
Yes. The moonphase is incorporated into the mechanical movement architecture.
What type of hands does the watch use?
It features blued leaf-shaped hands, giving the dial a traditional dress-watch appearance.
What is different about this APS L899.5 movement?
The movement uses an integrated architecture with a compact bearing structure and incorporates the moonphase mechanism into its mechanical configuration.
Does the movement have decorative finishing?
Yes. Visible movement surfaces incorporate Geneva-style striping.
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