La Spirotechnique · Royal Mistral #34792
La Spirotechnique · Royal Mistral.In 1963, the regulator ROYAL MISTRAL, “son of MISTRAL 1961”, left the Spiro workshops. It incorporates the new hoses with accordion fold and the second version of the AQUASTOP mouthpiece released in 1962, with the nozzle offset upwards, considerably improving comfort in the mouth thanks to the chin rest thus created. New collars with stainless steel screws are also created to fix the hoses.
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