Hi guys,
I checked my old stock-take records from 1984, '85 and '86 and found we (Tokai Australia) had very few of them, like 2 x '82 and 4 x '84. Overall in 3 years I believe we ordered 24 and sold 20.
At a glance, the headstocks are a different shape after 1985 and the latest ones have the logo placed differently also.
It seems those first 3 years were the most accurate ones and in terms of production, it was definately low - I'd rough a guess of 500 per year - but this is purely a guess.
Peter Mac