I’ve seen these all over Europe. Some have simple images of the cross flashing, some have windows screensaver esque animations, and some have 3d renders of various things rotating in all sorts of ways. Why is that? Wouldn’t a simple green cross be enough to get the point across, or do they need to be overly verbose? Here’s the full video instead of a gif
Indeed, the green cross is the symbol for pharmacies here in Spain and in most places I’ve been (including a bit of northern europe).
None of them sell cannabis. If legal to sell, it needs to be sold in separate stores, which usually don’t have flashing signs. Those stores can’t use the green cross as a symbol.