Marvin Square, Cal. 525, Men’s Manual Wind Vintage Watch, 1971

The square gold-plated case of this 1971 Marvin is matched by a finely brushed silver dial and a small-seconds register at 6 o’clock. Warm patina and small age-related marks remain visible on the compact 28 mm watch. Marvin’s Cal. 525 supplies manual winding, and a new black leather strap contrasts with the gold-plated case.

Square Silver Dial with Warm Patina

Applied gold-tone baton markers follow the square dial, with longer markers at the main hour positions and a minute track around the perimeter. The Marvin crown emblem and name sit in the upper half, with Swiss Made at the lower edge.

Small marks and spotting are most apparent toward the upper and outer areas. Slender straight gold-tone hour and minute hands show age consistent with the display, while the subsidiary seconds register supplies a separate seconds indication below them.

Angular Gold-Plated Case

Straight sides, angular lugs and a slim polished bezel define the square case. It measures 28 mm across and 34 mm lug to lug, with an 18 mm strap connection. Light wear remains on the gold-plated surfaces.

A small ridged gold-tone crown sits at 3 o’clock. No clearly legible Marvin signature is visible on it.

Marvin Cal. 525 and Service Status

The Swiss in-house Marvin 525 is a manual-wind caliber powering the central hour and minute hands with small seconds. Its compact layout suits the square case and the separate seconds register.

The watch retains its original watch components and is fully operational. Its service status is In Service, and full servicing has not been completed. It is supplied with a 12-month warranty and no box or papers. Worldwide shipping is available.

New Black Leather Strap

The new black leather strap has an adjustable fit and an 18 mm connection. Its dark color contrasts with the warm gold-plated case. It is a replacement strap, separate from the watch’s original components.