The checking of chassis by subcontractors prior to dispatch to JMI:

At Westrex, there were two inspections: (1) of the solder joints, which were marked by the checker with red dye to indicate that they were good; and (2) a final general inspection and signing off, a blue tag attached to the mains cable. The page on Westrex tags can be found here.

At Burndept, there were also two inspections: (1) unspecified - simply "1st Inspection"; (2) much as at Westrex, a final inspection and signing off. Tags were attached at both stages, the first at right, the second at left. Probably at first inspection, chassis were also stamped in purple with the Burndept stamp - see the entry for 15th June, further below on this page, for an example of the type employed in late 1964.

A page on the chassis numbers of Burndept-made AC30s can be found here. There is also a page on the colour codes used by Burndept to indicate the voicing of the the chassis it produced.

BURNDEPT 1st Inspection

AC30 Twin serial number 11715, Spring 1964.

AC100 serial number 1579, Spring 1966.

BURNDEPT 2nd Inspection

AC30 Super Twin Reverb serial number 4313, mid to late 1965. The chassis also has its "1st Inspection" tag.

AC50 Super Twin serial number 7139, early 1967.