The unit pictured below was probably made ready for sale in late 1971. A "Birch-Stolec" stamp appears in the reverb pan (last picture). Vox did not move to the Birch-Stolec factory in St Leonards-on-Sea (Hastings) until July/August of that year.

Most of the orange Sprague capacitors have date codes for mid 1970. The latest visible date on a component is "7052" = the 52nd week in 1970 (on one of the 2N3055 transistors).

General pics of the exterior of the amp are on this page, along with a brief overview of its intended use (driving a Vox Gyrotone rotary speaker).

A selection of pictures of a Midas without reverb are available here.

Vox Midas Reverb - serial no. 1142

Click for larger images.