It has 10 holes.
Vintage M. Hohner THE "CHROMONICA" Chromatic 10 Hole Harmonica-Key of C C6
Vintage M. Hohner Golden Melody No. 542 10 Hole Harmonica Key of G w/Case
Vintage M. Hohner Golden Melody No. 542 10 Hole Harmonica Key of F w/Case
Vintage KOCH Chromatic Slide Harmonica - Key of C Made in Germany w/Box
M HOHNER HARMONICA CHORDMONICA # I CHROMATIC 10 HOLE A GERMANY ORIGINAL BAG OLD
VINTAGE KOCH CHROMATIC HARMONICA IN KEY OF C IN ORIGINAL BOX .VG COND