A Pod of Dolphins

OK they aren't dolphins but they were made by Dolphin Glass of Japan. Three of them have the distinctive pattern of circles on the bottom over where the pontil would be and the one that doesn't I have seen the same size, pattern/colour vase with it, maybe someone forgot to "brand" it while the glass was still hot? Most are in excellent condition except the red/yellow one which has a nasty scratch on one side about a centimeter long. An antique dealer friend of mine tells me that will be the lady of the house dusting her treasures with her diamond rings still on!! :( I didn't take a separate picky of the blue, green and gold one as that was on my earlier post with the question mark on the gold writing on it's base.