Towzer the numbers dont match with anything normal – neither does the shape.

Looking around – the shape is more like the side window of a humber pig than an aircraft. But I assume it would be heavier.

Laurence the Bisley was made by Rootes so the inspector stamps should read R2 then a number below in the circles. That is what I see in the inspectors stamps.

Fly Buy – the date are shown on the museum website here:

https://speyer.technik-museum.de/en/calendar

There is a also a hotel at the museum that it is good and can be booked here:

https://www.hotel-speyer.de/en/

Finally – although it starts on the Saturday – tehre is always a lot of material arriving all the previous afternoon.