What's value of this stamp colllection

Well one of my friend have some stamps who lives in Europe and have some excellent stamp collection mostly from European, USA and Canada. He maintain good collection and he offered me this but I am not sure what's best price for this collection! I added image here :



Please check the stamp collection do tell me estimated value of collection.

Thanks in advance.

 

Not enough info here to value it.
Everything in the picture you posted can be bought by the pound for very little money.
You will pay more for shipping than you will for a full pound of what you see in that picture.

 

I have to agree at first glance they are fairly common and 1 the Spanish 50 peseta (portrait of a lady) looks to be damaged

 

I think I have that stamp with two horses.
Maybe the value is just a bit more of their face value.