These often centre on fabulously valuable artworks owned by extremely wealthy people.
Occasionally the objects in question have been hanging quietly on the wall of a public art gallery - until, that is, the owner dies or runs out of cash.
A case in point is Picasso's Child with a Dove (1901). This is currently in limbo. It has been sold secretively to an unknown foreign buyer for an undisclosed sum (thought to be in the region of £50m).(1)
Unfortunately, the new owner will have to wait a while before getting their hands on it. This is because Britain's minister of culture has placed a temporary ban on its export in the hope that sufficient money can be raised to "save" this item "for the nation".
This is exactly what occurred just the other day in relation to a painting by Manet.(2) It cost the Ashmolean Museum £7.83m to "save" this integral piece of British culture from the rapacious hands of a dastardly foreigner.
But don't believe this rhetoric. Oh, and ignore the headline price and touching tales of little street urchins parting with their pennies to rescue this relic. It took upwards of £20m in tax breaks and donations from public bodies to ensure that national pride remained intact.
Yet this doesn't bode well for Picasso's little bird-loving child, does it? The art fund (sic) must surely have run out by now. So too have the superlatives and dramatic warnings from our media luvvies and museum moguls.
Indeed, their fighting funds were already seriously depleted after they chose to place £95m in the hands of the Duke of Sutherland - one of the richest men in the country.(3) This act of Robin Hood in reverse stopped the robber baron from flogging two paintings by Titian along with other trinkets he and his family had so generously loaned to the National Galleries of Scotland. And now the same museum is coming under "threat" again!
Soon we will have to watch as Picasso's little bird migrates to sunnier climes. The national heritage will be fatally winged by this terrible loss.
The consequences just don't bear thinking about...
This is just as well because, in truth, the only repercussions will be a slight dent to national pride plus a small gap on a museum wall. This can be filled by any number of artworks that are currently in store at the National Galleries of Scotland.
Deathly quiet will then return to this mausoleum of art...
Until, that is, we are panicked by the next siren call as yet another integral piece of Britain's (ha!) much-loved heritage comes under covetous foreign eyes.
Tell the world. Tell this to everyone, wherever they are. Watch the skies everywhere. Keep looking. Keep watching the skies.
'Cos you never know, you might just see a sweet bird by Picasso fly by...
(1) Anon, "Picasso's Child With A Dove in temporary export bar", BBC News, 17/08/12, http://www.bbc.co.uk./news/entertainment-arts-19283696; Maev Kennedy, "Picasso painting Child with a Dove barred from export", The Guardian, 17/08/12, http://www.guardian.co.uk/artanddesign/2012/aug/17/picasso-child-with-a-dove-painting.
(2) Stuart Burch, "Manet money", 08/08/2012, http://www.stuartburch.com/1/post/2012/08/manet-money.html.
(3) Stuart Burch, "Purloined for the nation", 03/04/12, http://www.stuartburch.com/1/post/2012/04/purloined-for-the-nation.html.