Sinclair arrived on the scene, electronic calculators were
bulky devices confined to the desktop or briefcase. The Sinclair
Executive (1972) was the first true pocket calculator and
started a revolution that briefly made Sinclair the king of
the calculator market.
Because Sinclair calculators
were widely sold, most models are still fairly common today
and so have a generally low value. The Executive is much sought
after, as the first pocket calculator. The Sovereign is much
rarer - particularly the limited edition Silver Jubilee versions
- and the almost insanely fiddly Wrist Calculator is rarer
note that items offered for sale through eBay are usually
second-hand and sold without any guarantees of any sort. They
may well be sold without packaging or instructions, and may
not even work at all. If you have any queries about an item
being auctioned, please contact the seller. Planet Sinclair
cannot take any responsibility for your transactions on eBay.
Always ensure that you know what you are buying!
this is a rough estimate based on the typical sale value of
the item on eBay. The actual purchase or resale value may