Anybody know anything about these "Sand Dune IV" speakers -Audax drivers?

[Volante]

I bought these unusual speakers off the Bay a few years ago out of curiosity as much as anything else.

Nameplate on the back says "Sand Dune IV"
20Hz-20Khz + or_ 2Db
Power handling 200W
Nom impedeance 4Ohm
Hand made in England

They have been well made and are in a bird's eye maple veneer finish with Audax drivers:

240mm Woofer HT240GO (apparently a "high performance" unit)
170mm Mid/Woofer AP170G2
130mm Mid AP130G2
25mm Tweeter TWO25M1
a neat looking but unknown crossover inside

There is a switch which tirns on or off the 130mm driver.

The sound is pretty good although to be frank I haven't really listened to them much as I have many other speakers to play around with - I was struck by the unusual shape and the bird's eye maple finish and they were selling locally on the Bay so I went for them.

Any information on them would be useful. I am clearing space and will sell them on but would like to know more about them before I sell.

Link to pics below - I hope!