Hi as a Dealer & Collector I cannot remember the last time I saw a BOAC tin, Nor any Airline tin for that matter.
Airline memorabilia is sadly 'Drying' up 'VERY QUICKLY' alot quicker than most Antiques & Collectables.
Not much on ebay really, Just postcards and more postcards.
I often wonder where it has all gone, Or have the vision of one day opening a warehouse door full of BOAC, BA, BCAL, BY, & DA collectibles!!!! Lol
When I go to a carboot I ALWAYS make a 'BEA line' for somebody who looks old & interesting!!!
(Makes a change from all the modern rubbish & the plastic people hum!!!!)
Programmes like Cash in the attic have made more and more people keep or sell their items.
Tim Wonnacott brightens the day up thou with his entertainment!!!! Lol
Good Luck In Your Search.