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Welcome on board ! If you search something about the dark tower the nice folks here know where to find it ! So you stepped through the right door ;)

would not suggest that, you will get ridiculous offers as the people who are searching for such a book know the value and will think you are trying to scam them.
If you want to be sure that it is...

As i said, best way would be to go to the areas i posted.
Without pictures its hard to say. And here is the wrong place for price discussions ;D

What you describe can be in the 650 - 850 range...

Hi Jim,
welcome on board!

Your description seams to target a first edition of the gunslinger more then a limited one - but this would also be a nice finding.
Best is to check the wiki
...

Hello everybody,
its up to me to say hello and my best wishes to everybody
here in this forum !!

Im reading here quite some time , and now i just thought why not get into it
and start...