Seiko Tokelaito Crystal 216T01ANS – Ø approx. 21.6 mm – round/domed with tension ring – WP (waterproof) – acrylic – Vintage Watch Glass – NOS

Original Seiko トキライト (Tokelaito) watch crystal from unsold old stock (NOS) in the classic blue "WP" packaging (WP = waterproof version), "Watch glass", 1 piece.

Seiko reference 216T01ANS. This is a round, domed acrylic crystal (Plexi) with an all-round metal tension ring - the typical waterproof design. The reference code indicates a crystal diameter of approx. 21.6 mm (leading "216"); the outer diameter including the tension ring is slightly above this. The clear version without a ring has the reference 216T01AL.

Tokelaito is Seiko's designation for the original watch crystals from the 1960s-1980s. The exact case/model assignment can be researched via the Seiko reference; offered by reference and exact dimensions.

The packaging shows the classic blue and white Seiko-Tokelaito "WP" designation from old stock. The crystal itself is unused, clear, and without scratches; signs of age are only on the packaging.

Dimensions & References:

• Shape: round, domed, with metal tension ring (WP/waterproof version)
• Crystal diameter: approx. 21.6 mm (from reference code "216")
• Material: Acrylic (Plexi)
• Seiko reference: 216T01ANS (tension ring version; clear version without ring: 216T01AL)