Neil,

Most of the Haig's I have collected over the years have been 86 or 86.8 proof, but I have seen quite a few that were 70 proof and most seemed to be from the 50's-60's.

Look at your bottle and in the top center of the label, it should have a coat of arms and
and in scription below that starting "By Appointment to ..."

Read that back to me & I will help narrow the dating down for you.

Cheers,
Walter C Hurst
wchurst(@)hotmail(.)com