Wyvern 1845, when it became the crest of its unofficial coat of arms. The company asserted that the "wyvern was the standard of the Kingdom of Mercia", and that it was "a quartering in the town arms of Leicester". However, in 1897 the "Railway Magazine" noted that there appeared "to be no foundation that the wyvern was associated with the Kingdom of Mercia". A green Wyvern stands in the emblem of the ancient and historical umbrian city of Terni, the dragon is called by the citizens with the name of Thyrus. Sable wyvern on a white background with endorsed wings forms
Westland Wyvern with smoke from a fuel leak onto the exhaust ducting. Clyde development was subsequently cancelled by Rolls-Royce after only 50 hours of flight time for the TF.2, and the aircraft was delivered to Napier & Son to be fitted with the Nomad turbo-compound engine. The latter engine never materialised, however and this aircraft was used for crash barrier trials. The first Python-powered TF.2 flew on 22 March 1949 and this aircraft introduced the ejection seat to the Wyvern. Twenty TF.2s were completed to the Python design although after three years of testing what was then a revolutionary aircraft design, a