Originally Posted by
phild
I remember my brother used to clean all his old Victorian pennies with brown sauce, a tip he picked up from Blue Peter and they would come up like brand new. He found out later that cleaning them could make the coins worth less on the collectors market.
I remember nearly everyone in the early 70's checking their change to see if they could find an elusive, rare 1933 penny. This coin was highlighted by the fact that thieves had dug up the foundations of a church in 1970 where one of these rare coins had been buried. Only about a dozen were minted that year and 3 of them were buried beneath newly built buildings for that year. One had been unearthed and given to a museum and a third is still under a building of the London University.