I have a Offset Serigraph by POMM called the Corridor it is 245/350 in Excellent condition with the Certificate of Authenticity what is this worth today?

I think the following could be the price of a reproduction...
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Pomm Fine Art - Exclusive Watercolor Collection

The Corridor - 23"w x 33"h
Regular Edition sold out. Remarque edition available.

"This painting was inspired by some architecture I saw across the street from the Opera House in Paris. The building had the long walkway, with beautiful light coming in. I thought to myself, “I need to make this place into a moment I would enjoy”. So I put a red door with lace and I created flowers, freshly dropped. (By whom?) That's up to you. To the left of the painting where the light comes in are stairs going out to a beautiful rose garden. You can see it without the garden being there. What is special about this piece is that the walkway moves with you. Move from side to side and watch it follow you!"

Les Artistes - 14"w x 15"h
$600
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Good searching, firmbeliever! Hopefully, chavonco will return for confirmation of the information that you have found!

Thank you Clough.
I do hope chavanco returns.

The paintings in the link are so very beautiful...