This is what $6m of wood looks like...
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These beautiful antique string instruments are up for auction - and we want them all

4. This is what $6m of wood looks like...
A Strad alone might not be enough. If you're a dedicated violin collector, you'll want the full set. These are the four most valuable lots on auction - with an estimated worth between them of $6m. Now all you need is a Gesù. FYI: Beares set the world record for the most expensive Guarneri del Gesù violin ever sold, in excess of $16m, in 2013.