A friend gave me this game and I know that the original version is worth about 100 dollars, but this version I do not know what price can reach ... Any ideas?



Gameplay of the cartridge: 

It is definitely a prototype. My guess would be $200-$300. There was a similar one that sat on eBay for a while. I'm not sure, but I don't think that one sold. I don't follow pal prototypes as closely I do NTSC.

Edit: I just read your description in the protoculture forum. Known differences will boost the value. The cooler the differences the bigger the boost.  

Interesting, though, I watched the vid and even though the label has Germany written on it, the cart looks completely like the NTSC cart.  Is there a chance that this was outsource developed in Germany and, possibly, this cart was sent to the US for distributor review and/or final testing?

It is definitely possible. I have seen it the other way, where it was labeled NTSC, but was PAL. I doubt it though. The lockout chip is PAL B. Also it is hero turtles.

Sound differences could be due to a mismatch between system and cart. For example NTSC system and PAL cart. OP, what type of system did you test this on?
 

In a PAL Spanish console, i got four copies of the prototype :')

I would love to see photos of all of them, especially the PCBs.

 

http://nintendoage.com/forum/mess...

It is hard to tell, but that looks like several pictures of the same cart. I would love to see pictures of all four of them.
 

Currently I only have access to one of them, I have them in another city

Being PAL definitely hurts the value.