Hi Stephanie,

Thank you for contacting Mearto with your appraisal inquiry.
Martin Dansant trumpets are selling somewhat across the board at auctions in the past 5-6 years: mostly between $100-600 so I've valued yours in the middle. Was your father a famous musician? That can boost the value a bit too...
Based on the photos and information provided, and subject to examination, this is:

A vintage Martin Dansant handcrafted silver trumpet
1926, serial number #67852.
engraved, with a lined and fitted case
(DIMENSIONS)
CONDITION: with some wear from use
PROVENANCE: inherited
$300-500*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, and thank you again for using Mearto.