r/Burberry_Vintage

Hi! I found this jacket, I think it's vintage but not entirely sure. It's definitely not new, but I am kind of new to the world of burberry so I've come here looking for help ;) anyway, I'm kind of suspicious whether it's legit, as well as the model and the era, might anyone be able to tell me more? Thanks!

Seller says the size is on here, perhaps it’s in code?

Coat also has a Selfridge’s label.