31-05-2019, 11:15 AM
If you are going to reveal the date on the cap, I'd go with that - it probably only preceeds the date of manufacture by a small amount.
Another source of useful information is the date code on any original valves - it's unlikely that many will have been replaced.
If you are not familiar with decoding these, this is a useful resource:
https://frank.pocnet.net/other/Philips/P...ListAB.pdf
Another source of useful information is the date code on any original valves - it's unlikely that many will have been replaced.
If you are not familiar with decoding these, this is a useful resource:
https://frank.pocnet.net/other/Philips/P...ListAB.pdf
