Is anyone here knowledgeable about old Harmonicas? Found these old

I have 2 Harmonicas I would like to Identify - General Harmonica

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Is this old Harmonica able to be cleaned or salvaged at all? : r

Harmonica For Dummies - 2nd Edition By Winslow Yerxa (paperback

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Rich sound,responsive,airtightness - the precision-phosphor bronze reeds,brass reedplate,brass cover with black paint&1.2mm thickness reed plate is

East top Chromatic Harmonica Key of C, 12 Holes 48 Tones Chromatic Mouth Organ Harmonica For Adults, Professionals and Students (BK)

Harmonica Lessons: Top 5 FAQs

Hohner Special 20 Harmonica (G)

Is anyone here knowledgeable about old Harmonicas? Found these old