This plug is unique to Israel. It has two flat prongs like the type B plug, but they form a V-shape rather than being parallel. Type H plugs have got a grounding pin as well and are rated at 16 amps. In 1989 Israel standardised on a new version of the type H socket: the holes were made round in order to accommodate type C plugs as well. The slots for the prongs have widening in the middle specifically to allow type C prongs to fit in. The flat-bladed type H plugs (lower picture) are currently being phased out in favour of round-pinned ones (upper picture).
Countries Using Type H Electric Plug/Socket - Gaza, Israel.