Help with Watanabe Wheel identification

Hey all,

There's some Watanabe 15x6.5 wheels on my local Facebook marketplace. The current owner doesn't know the offset and the wheels have been repainted so the original ID stickers are long gone. Do any of the casting or stamped marks on the hub side indicate offset? If all else fails I'll just go measure them but I'm hoping maybe one of you experts can ID them from the pic.