Baume & Mercier Baumatic BM 12820 Automatic Movement & Silver Dial 30J Vintage

About this item

A vintage Baume & Mercier "Baumatic" automatic date movement, sold uncased with its original cushion-shaped silver bark-textured dial, hands, stem and crown fitted. The gilt bridges are stamped "BAUME & MERCIER", "BM 12820", "30 JEWELS" and "SWISS". The dial is signed with the Baume & Mercier phi logo, "BAUME & MERCIER GENEVE", "BAUMATIC" and "SWISS MADE", with applied silver baton markers and a date window at 3 o'clock. A spare or donor movement for a Baumatic watch of the 1970s, or a display piece for collectors.

Brand heritage

Baume & Mercier traces its roots to the Baume family workshop founded in 1830 in the Swiss Jura; the Baume & Mercier partnership was formed in Geneva in 1918. The Baumatic name was used on the brand's automatic watches, and the BM 12820 is documented in auction catalogues as the 30-jewel micro-rotor automatic calibre of 1970s Baumatic models.

Why this one is special

• Signed Baume & Mercier calibre BM 12820, 30 jewels, automatic with micro-rotor (slim construction)
• Complete with original signed dial, hands, stem and crown
• Textured "bark" silver dial with applied batons, a typical 1970s design
• Date function

Specifications

• Brand: Baume & Mercier, Geneve
• Calibre: BM 12820 (stamped on the bridge), automatic, micro-rotor, date
• Jewels: 30 (stamped)
• Origin: Swiss (stamped "SWISS"; dial "SWISS MADE")
• Dial: cushion-shaped silver bark texture, applied silver baton markers, date window at 3
• Era: 1970s
• Sold without case, crystal, caseback or strap

Condition

Pre-owned, sold as shown. The dial has dark age spots and oxidation, mainly around its edges and in the upper area. The movement shows tarnish and spotting on the gilt plates and some rust marks on the ratchet wheel and screws; a green spacer ring sits under the dial. It has not been serviced by us and comes with no warranty on timekeeping. Please check all photos carefully as they are part of the description.

What's included

The movement with dial, hands, stem and crown, as shown. No case, no box, no papers.

Shipping & Returns

$25 DHL Express shipping worldwide from Cairo, Egypt.
30-day returns, buyer pays return shipping.