cross member stencilled/painted markings

[Chris KC]

Yes, discarding my wilder theories I'd guess EX was for export, on a production line you need a big clear indication when something comes along that requires any different spec parts. (Does the pool of vehicles exhibiting the marks support this idea?)

Also if bodyless cars were being shipped the recipient would need to be able to clearly distinguish between any variants (saloon vs tourer, for example).