I found this whilst in Portsmouth harbour last week. I spotted it on a lamp post facing across from the Portsmouth naval base and historic dockyard, and the HMS Queen Victoria aircraft carrier which you can just make out in the background in the pictures. I know what a Banksy looks like as I remembered seeing another similar Banksy road sign in London just before Christmas on social media and the news which had military drones on. This could possibly be an original Banksy, capturing the essence of graffiti art and showcasing his unique style. It has The “Banksy” logo sprayed on the back in an army green. There are 3 helicopters hovering above which are 3d and in 3 different sizes and look like they have been spray painted also. I had to unscrew the bracket to get it down, which is still intact and included. This could be Banksy’s powerful statement about war and all the current ongoing conflicts in the world. I have included the pictures I took on my phone at the location before it was removed.