SIBU: News that a 50 sen coin made in 1968 was auctioned off in Singapore for S$6,500 has sent collectors, especially those having coins of the denomination produced from 1967 to 1969, into a frenzy.

With the sound of ka-ching ringing in the ears of collectors, it was no surprise that the Sarawak Philatelic and Numismatic Society chairman John Goh found himself swamped by calls ever since a report of the auction, held in the city-state in 2014, was carried only in January by Sin Chew Daily.