Before buying our 1985 van, with what is by all accounts a DG engine, I was unable to find the engine number in the place that I've read it should be. The attached photo should show that I've thoroughly cleaned the area to read the number. Perhaps I'm one of life's pessimists but does it look like the number has been ground off? I'd love someone to tell me I'm being dumb and that the number is elsewhere. The V5 says it's a DG but I'd really like to see the number for myself.
The van is RHD, 4-speed manual and petrol.
Should I be looking somewhere else - or just enjoying working on my "hot" engine?

Many thanks
Chris Mann