Antique Stahltone (Germany) Accordion- Circa 1900 - Catawiki
Accordion - Wikipedia
Antique Vintage Accordion Music instrument 1900s | eBay
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L'accordéon au début du XXe siècle - Guide Accordéon
Accordion Klingenthal Hess from 1900-1950? | Reverb
Italy, ca. 1900. Maker: Cav. Sante Crucianelli. a 4 row button accordion with 64 treble and 120 bass buttons, and mother of pearl inlay lacquered wooden case. Measurement: 34 x 38 x 18 cm.
Ruby Lane - Old German 'LUDWIG' Pine Tree Brand Accordion Circa 1900: http://www.rubylane.com/item/160319-7700/German-LUDWIG-Pine-Tree-Brand | Facebook