Hi Blue and contributors here,

This is a good question mate.

The use of the word 'circa' is a bit of a laugh - in that it can cover a range
of thought from 'stab in the dark' (as Moderator Gadge has said)to an educated estimation.

Time and time again I have found myth and fact not make happy bed couples.
Perhaps, people would like to think their machines are older than what they are.

Pope did have a motor mower in 1954; but it wasn't a rotary.
The 320-01 was introduced in 1957.

The issue that animates my thought is this: why did Pope enter the rotary market with
such an advanced, futuristic design, only to scrap that look within a couple of seasons?

I have my thoughts, but that's all they are...

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