Steve,
Thanks for the last post. Made it a bit clearer to me. Having searched "Royal Astro" on cloudy nights I thought you may be the same SteveK on that forum who has commented on these scopes. I owned a 76mm Royal Astro (sold by AASC in Crows Nest) from 1968-71. No mention of the 90mm in their catalogue back then so I was sceptical as to its existence. Agree that these are a fine scope optically. Probably better than most Unitrons which seem more collectable.
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