Im new to this forum but have been collecting arcade pcbs for decades now. Wanted a valuation on this game as it is an undumped version of segasonic the hedgehog. Its not revision b. That is still missing but its the world revision. How can i tell if its world revision, there isnt any warning " Not to be used outside of X country "at boot up. This is typical for world releases. Its not the USA version as they failed to file thier pstent for segasonic name on time and there would be a winners dont use drugs splashscreen too. Anyway i just wanted to see how much u guys value it from a sonic collectors point of view. It could be the only one, there could be more. But at this point in time, this is the only knwon copy of it!. It is still running on battery too! It has a seal on it which i dont want to break but looking through the holes it looks original with mask roms. Someone has agreed to buy it for 4k. It has been valued at 6k on klov forums. https://forums.arcade-museum.com/threads/undumped-segasonic-the-hedgehog-pcb.525307/ Here is a pic of it. Ignore the Japanese artwork. It belonged to a japanese version i sold 7 years ago. I kept the arts as a souvenir and the buyer of my aero table didnt want nor pay enough for it. https://forums.arcade-museum.com/attachments/20230713_202356-jpg.678844/ And video of it.