Vintage 1970's Tente Astro Base Building Blocks Toy Set No. 590723 - A Construction Set By Denys Fisher - Factory Sealed Shop Stock Room Find. Released in the 1970's as part of a series of Building Blocks Construction Kits and was distributed in the UK by Denys Fisher. This Fantastic Tente Building Blocks Construction Kit is set number 590723 and features the Astro Base and includes all parts to build the item plus a step by step assembly guide, Stickers and a Tente toy catalogue. Shop Stock Room Find. Discovered in he store room of a closed down shop with a whole host of other Building Blocks Kits from a similar era. Some very minor signs of shelf wear on the edges of the box, and the contents are still sealed in the original packet. All orders received before 4.00pm Monday to Fridays are shipped the same day.