Postage Stamps
Southern Letter Unpaid cover offered with $20,000 valuation
The Southern Letter Unpaid cover dates to the outbreak of the US civil war in 1861
Southern Letter Unpaid cover up 31% on estimate
The Southern Letter Unpaid cover sold for $52,000 at Robert A Siegel
'Southern Letter Unpaid' cover estimated to make $40,000
The 'Southern Letter Unpaid' cover is one of just 29 known to exist
