Saratoga:
There is the red flammable symbol, and UN 1950 UN 1993. Harmful to water and overpack markings on it.From what I can tell as long as the actual product is within 1 L aerosol containers then he can carry limited quantity.
Hi Saratoga,
I get the feeling that this is going to be a bit tricky… 
I’m afraid that the labelling shown in the picture is possibly incorrect (some of it is also very out of date) and therefore not of much help.
We also don’t know what was written on the paperwork. 
What we know so far… UN 1993 (if it has been correctly identified) is not an aerosol.
UN 1950 is aerosols, and you’re correct in that these can normally be carried in 1L (depending on the contents) as LQs and I’d just add that it’s without restriction of amount on the vehicle.
I could spend ages typing all the various theories as to how/why the shipper has chosen the labelling that they did and what they might think it means, but it wouldn’t get us to the answer.
The answer can only come from knowledge of the whole information relating to the substances and the packaging size(s) as presented for transport.