Notes

First Impressions

it’s smaller than you’d think
it’s a solid mass - no rattles or squeaks and it has balanced centre of gravity
while it is in three sections, the memory section is roughly twice as thick as the logic sections – so it’s sort of a four layer cake

paint pen written on the face plate ‘JAG EX’
The model tag reads: GEC Computers Limited TITLE. MCS920M DIGITAL COMPUTER CATALOGUE No MCM7 DRAWING No IL322A11787 NATO No 6JA-7440-99-111-8581 SERIAL No 5335 JOINT SERVICES MANUF. No K0978 Borehamwood England A subsidiary of the General Electic Company Limited
Four GEC Computers Ltd. Quality Department service seals:
- Face plate top left: This appears to be from 1980. It was intact before disassembly
- Face plate bottom right:
- Top plate bottom left
- Top plate top right
Modification plate shows ticks for modifications up to 4

All 4 interface caps are present. E, F, G have their cap locking circlips in place
Rear interface sockets A and C have plastic service caps in place which shows adhesive residue indicating they had once been secured with tape.
The item had been in a heavy box with firm foam packing. This had no markings on it and wasn’t preserved.

Tape residue on top plate
Tape residue on back plate
Wear on loading rails
Scratches on all sides
Internally, there’s fine dust bound to the surface of components toward one corner of the layout.
Generally not immediate condition concerns – though it should be vacuumed out.