The superman is traditionally a combination of red, blue, and yellow, as I have seen in the Akro and Peltier types. The red, white, and blue ones were made by more than one maker. We might need to see your marble from several angles. I have dug many of the Marble King red, white, and blue ones. It could be a MK mib!
nope not a superman...the only true superman was made by peltier....the handle superman was attached to an akro marble with red white and blue prob to trap ebay newbies into a quick sell...the peltier marble sells for around $100.00.....the akro mib is worth maybe $10.00....the marble you showed looks marble king to me worth less than a quarter...ill try to find a good pic of the peltier...i got one around here someplace....