Fashions by leading designers could net a small fortune too. A Zandra Rhodes number could be worth around 600, while a skirt from Laura Ashley would sell for about 35. The Queen T-shirt designed by the mummy and daddy of punk, Vivienne Westwood and Malcolm McLaren. Authentic examples have seams and labels on the outside and are worth up to 120. Little lies outside the reach of the most ardent Seventies fan, who will even pay 15 for a bottle of Opium perfume or 35 for an airline bag commemorating England in the World Cup at Mexico in 1970.
Toys are another potential high earner.
75- 85, and a Kojak Detective Game around 12, although anyone with a toy Kojac Buick still in its box could cash in to the tune of 80. Choppers were all the rage in the Seventies and the most sought after now is a Mark 2 version from 1971 with sloping main tube and curved back, worth up to 500. You can also make money on furniture, glass and ceramics from the era. Should you want an expert opinion on what your secret stash of Seventies nostalgia novelties might be worth, it might pay to contact auctioneers Christie's, which offers free advice and valuations. Tom Scott, of Christie's Harrogate office, says there is a growing demand for all things from the Seventies, particularly from overseas collectors.