Your vintage M. Hohner "Goliath" Harmonica (No. 453 with 48 reeds) typically sells for between $35 and $75 on the secondary market today.
Value Breakdown.
•Excellent Condition ($50 – $75): If the box remains completely intact, the metal covers are clean with strong embossing, and all 48 internal reeds are clean and fully functional. I am asking $45.00