Martin's Scotch Whisky Sign

I found this sign in my Grandmothers possesions after she passed. Her and my Grandpa owned a resort in Northern Wisconsin from 1974 to 1988 then retired to Arkansas after they sold the place. Of all the classic bar signs they had, this was the only one that was in their more personal belongings. Its made entirely out of wood and held together by nails and is about 8"x16" I know nothing else about this sign and would like to hear more about it. 

Poor