Stands for the Vox AC10 Twin and Super Reverb Twin
1963 to 1968
Below, pictures of an AC10 Twin / Super Reverb Twin stand probably from the second half of 1964, extremely scarce these days. The central parallel bars are 24 1/2" wide; 8" deep (outer edge to outer edge); and their tops are 18 1/4" from the ground (castors included). The example below turned up recently in the USA - thanks to Ihor for signalling its existence.
The relevant pages on AC10 Twins and the AC10 Super Reverb Twin can be found here.
Below, a detail from the first JMI advert for the AC10 Super Reverb Twin. Note that the amplifier section is too broad for the stand pictured. Aspects of the design were clearly still in flux when the photo was taken.
February 1963.
Promotional images from later in 1963 show the amplifier section embraced fully in the stand. The production design can also be seen in the earliest Vox catalogue issued by the Thomas Organ Company in the USA, late 1964 / early 1965.
Detail from the Thomas Organ "Million Dollar Deal" catalogue.