Up for sale is a vintage SQUALE PVD coated MK1 screw down diver's crown. It will only fit one of these historical references:

SQUALE 1521 PVD (> 1980, metal insert, Automatic, Quartz)
SQUALE 1521 MARINA MILITARE PVD (> 1980, Automatic, Quartz)
SQUALE 2003 - PVD (Automatic, Quartz
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SQUALE 1553 PVD MK1 crown variant (with 3.4mm tube!!)

The sale is for one screw down diving crown.

On request, I can sell separately a tube as well, corresponding your case (please inquire).

PLEASE NOTE: This is vintage original Swiss Made dead stock material. See the crimping on the underside.
Will fit your ETA 2783 / 2873 / 2452 / 2472 / ETA 2824 (with TAP 9 stem), ETA - ESA quartz movements.

You will receive exactly what you see in photos.

Any other defects not mentioned in description but visible in the pictures will be considered as described.

The item is Guaranteed 100% Authentic and as Described.