[William78]

My Avos are as follows:

Avo 8 Mk 5 Ser No: 06455 8V/12/77 with leather case.
£10 from a recent car boot sale. Working Ok

Avo 8 Mk 3 Ser No: 11649.H.564D with leather case.
Free from a friend. Moving coil open circuit

Test set No1 Ser No: 11,890-7-71 with green vinyl case
£30 from Bolton radio rally 15 years ago. Working Ok

Multi Minor Mk5 Ser NO: 250918 with black case.
Modular resistors have date codes suggesting 1980
Working Ok. My first real multimeter. Acquired in the 80s

Multi Minor Mk5 Ser NO: 224489 with black case.
Modular resistors have date codes suggesting 1979
Reads slightly low on all ranges.

Avo 12D Ser No: 307958 (Post office on front panel)
Modular resistor has date code suggesting 1981
£2 from J.Birkett at Bolton radio rally in the 90s. Works great.

William