oconnorfrank All event items remain available in shop for purchase upto 1 week from the time of end of event. If you do not spend everything you had before that, you can unfortunately no longer purchase the items that came with the event.
You'll have to wait for the event to be added to shop, if ever, then purchase it for 500 gems, that's the only possible way you can spend the sextants. Otherwise you'll have to sell them off to the trader for a meagre amount of coins.
