Want to know any information on this harmonica I inherited

Model 270. Made since 1930s without significant revision. Yours pictured is no older than 1950s. Some play really well while others have succumbed to changes caused by handling or the environment. Current MSRP in the USA is over $300, but do not base the value of yours on the current. The value of yours can only be determined on its air efficiency, intonation, and market value. There is no added value for its age.

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