Citizen Starlight Watch Glass DTRG8601 – 15.3 × approx. 19.3 mm – square/domed – acrylic – Vintage Watch Glass – NOS

Original Citizen (シチズン) watch glass from unused old stock (NOS) – Citizen original spare part (純正部品 / "Genuine Parts"), 1 piece, in the classic orange Starlight packet with the well-known Starlight mascot.

Marked on the original packaging as プラスチックス ("Plastics") – meaning it is an acrylic crystal (Plexiglas). The shape is indicated as 角凸 = angular (rectangular) and domed (convex). Citizen reference DTRG8601.

The dimensions are 15.3 × approx. 19.3 mm (stamped in the era-typical Citizen notation). The crystal is installed vertically. Offered by reference and exact measurements.

The packaging shows the classic orange Citizen Starlight marking from old stock. The crystal itself is unused, clear, and without scratches; signs of age are only on the packaging.

Dimensions & References:

• Shape: angular (rectangular), domed/convex (角凸)
• Width (3–9 o'clock): 15.3 mm
• Height (12–6 o'clock): approx. 19.3 mm
• Material: Acrylic (Plexiglas / プラスチックス)
• Citizen Reference: DTRG8601