its not prorsum all the old burberry say that,some stuff even says burberrys. I believe the prorsum line was started by menichetti in the early 2000s and hwas taken over chris bailey. Burberry actually was an old stodgy brand til the late 90s when their trenchcoat was featured inside out at some trendy designers runway (i forget which) they immediately signed kate moss to model and the rest was history.