Could be worth "something", but we'd need to see photos first to determine both dating & condition...but it could be worth up to $150.
If you are interested in having it appraised, I can get you a fair idea of what
it would sell for in various markets...I do alot of White Horse collecting & selling myself.
As for the taste, not much has changed since the mid-late 1950's with regard to production, so your bottle should taste nearly identicle to a bottle
off the shelf today....Earlier versions were distilled differantly, and this affected the flavor profile considerably.
Walter C Hurst