Hi Nick,

Thank you for contacting Mearto with your appraisal inquiry.
A comparable bottle of this whiskey sold at auction in 2017 for about $4,000. Here is the link: https://whisky.auction/auctions/lot/26659/very-old-fitzgerald-8-year-old-1947.
Based on the photos and information provided, and subject to examination, this is:

A bottle of Very Old Fitzgerald 8 Years Old Whiskey
Distilled in 1947 at Stitzel-Weller distillery and bottled in bond in 1955.
100 proof
4/5 quart
with original box
CONDITION: unopened bottle with original box
PROVENANCE: inherited
$3,000-5,000*
*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.