Unidentified SS1

Here’s one for the SS sleuths.
Original chassis number is unknown. They’ve apparently taken one from the oil filler cap for registration, but it looks to me like 135775.

http://ssjaguar.collectordata.com/cars/detail/?car=136274

It’s up for auction in the Netherlands.

I wonder, is there a chassis number stamped somewhere on the chassis?
Is Ed still with us? He would know.

I love the fire extinguisher.

An attractive and interesting car but ‘Correct and original’ ?
Phillips-head screws in the dashboard. 0/10 for their homework?

Ed no longer frequents JL: he’s still kicking, though.