Probably 95%+ of stamps are completely worthless. Certainly the Spanish ones you listed above are. I sold a box of over 100,000 junk stamps including all the ones you posted, for AUD 200 a couple of years ago and was delighted with the price I got.
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but i found some of them costs up to €150 at philasearch auctions.
A Citation is definately needed for this. Just because some idiots may decide to ask stupid prices for exteremly common stamps, I would need to see where they were actually sold at these prices. Your stamps are very, very common and utterly worthless.
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please sir tell me what is that 'retail' value. If i have say 10000 stamps dating before 1940's how can i access which one can buy me an ipad or a car or perhaps a house
Retail for what you have scanned is zero, zilch, nothing. If you wish to research your stamps one by one, I suggest that you go to a library, get specialised Catalogues and go for it. Good luck.
10,000? How about
100,000 which the owner of this Board gave away in a contest.



Norm