Cast Signed WICKED Poster - Is This From Original Play?

I found this at a thrift store - it's a cast signed poster for the play Wicked from the Broadway Gershwin theatre.
Above the title it says 'A New Musical'.
My question - is this signed by the cast of the original musical? I found one on eBay that sold for a best offer of a $700 asking price! I don't recognize any signatures (I can't read painting signatures so this shouldn't be of any surprise!)
Thanks for any help with this.

 

Here are the original casts. Hard to read the signatures but Katie Rose Clarke, for instance, was a replacement for Glinda.

Debora

 

I think I see
"kristin chenoweth
but not sure.

 

Full original cast lists and replacement cast lists here. Clarke took over the role of Glinda in 2007. Show opened on Broadway in 2003.

https://wicked.fandom.com/wiki/Wicked_Cast_Lists_(Closed_Productions)

Debora

 

So not the original cast - ah well; Thanks Debora!

 

No, not. But someone may well have interest.

Debora

 

Where on poster?
Thanks!

 

On the wicked witches hand. Again I am not sure if that is right or not.

 

The Wicked Witch's hand isn't shown.

Debora

 

sorry I meant the other one that is in white with green eyes.. My migraine interferes with my thinking.

 

I don't see either Kristin Chenoweth or Idina Menzel, who I would expect to be in the biggest draws.

 

Apologies. Know how debilitating they can be. The signature in Glinda's hand is that of Katie Clark who played Glinda.

Debora

 

The Wicked Witch was played by Carmen Cusak and that's her signature above the character's lower face. She joined the cast in November 2007 so poster can't be earlier than that.

Debora

 

I put it on eBay & said it was from 2007 - I am asking 1/2 the $700 the original sold for - or best offer!
Thank you all!