Help idenifying a model range

[pilsbury]

I have an orange but can't find what model it is or any info on it.
It's a 6 channel, angled front PA/Top.
There's a picture of one the history page in the 1973 range picture
It's on the grass to the back left of the mixing desk just in front of the speakers..
What model was that please and any ideas of it's specification.
Thanks

(sorry for wrongly posting this on the community pages by accident..
typical newbie !!)

[bclaire]

I think all of your answers are there...