The white-painted number is almost certainly not a factory chassis or casting number, but an internal or post-factory marking. Numbers like this were commonly used as factory assembly/batch tracking codes, workshop or restoration job numbers, fleet inventory IDs, or galvanising/refurbishment ...

This is a fourth post test to see if it opens up the full settings.

This is a third post test to see if it opens up the full settings.

'78 Series 3 100" French & Swiss army evaluation prototype.

https://dunsfoldcollection.co.uk/collec ... prototype/

Testing out a photo upload of my '53 80", and a link to my show board https://drive.google.com/file/d/1muJo7V ... p=drivesdk