I can help you with this one....
Your Old Rarity is actually from about 1949-1957...The 1939-48 bottles did not use a foil-wrap on their bottles, due to shortages in material used in WWII.
The pre-1940's bottles also had a much differant opening, and did not use a plastic screw-cap such as the one under the foil-wrap here.
I saw 2 identicle bottles to yours sell for $81 & $83.50/shipped at online auctions over the past few weeks.
Interesting Brand though...I should buy one for "testing"!
Walter C Hurst