Hi Ron I had a look in Jack Simms book I suppose it could really be any of those models . I only thought that it might be a 584 because it was a manual model
And I was told there wasn't . Many electric or air operated ones in Australia
Are all those pumps you mentioned 6 sided as from the photo I posted of the underneath it appears to be 8 sided .
Do you make a base that would suit this top .
Thanks
Bus7