Originally Posted by
ccdjg
There is bit about the "Typests" in the Encyclopedia of Spring Air Pistols, which says:
WEBLEY TYPEST
An unofficial name for a small number of analogues of the Tempest pistol, which were made from milled-down defective Typhoon frame castings instead of Hurricane castings. Thus these were slightly smaller than the Tempest in the grip area, and had the characteristic brown grip plates of the Typhoon. As they were not intended for the market they were unmarked. Only six examples were made and these have found their way into private collections.