I believe it spent its entire time in wood !
From the Dalmore website:
" The Dalmore 62 Years Old Single Highland Malt
This rare spirit has been derived from 1868, 1878, 1926 and 1939 Dalmore. Over the years it has been racked several times and finally finished in an Oloroso "Mathusalem" Sherry butt from Gonzalez Byass, Spain. Distilled and matured by The Dalmore Distillery, Alness. In wooden presentation case. Single malt, bottled at natural cask strength of 40.5% volume
1 bottle £10000-12000"