As a first pass since it is a British brand. I'd try looking at CO Bigelow in Copley Place. If it is more exclusive I'd try giving Colonial Drug in Harvard Sq. a call. If they have it Colonial Drug is cash or personal check only no credit cards.
Also I was looking for Taylor of Old Bond St. fragrance earlier this week and I contacted them through their British website and asked for a list of US stockists and was sent one. Then I found an online supplier among that list. So go to Pecksniff's website and e-mail them.