If its a poster, you will have a stamp on the back of where it was made/reproduced. If its an oil painting, it will be on heavier paper, and more than likely, it will be an original. Although, I've never seen one in person, there is a web site that will tell you more. www.rosamond.com.
She worked not only with watercolors, but did several oil and guauche works. They vary in size, but some of her oil paintings are quite large.
An original will usually have visible traces of the making process which are lost in a reproduction. An obvious example is an oil painting, which usually has an uneven surface, both because the 'support' (generally canvas) gives texture to the paint, and because each brush-stroke produces a variation in the thickness of the paint. Even with a pencil drawing, there's a silvery sheen which isn't reproduced.
Another difference is that a reproduction will produce all colours by using varying amounts of a small number of inks. By examining it closely, it's possible to see the inks as tiny dots, which may be patterned or random depending on the reproduction method. (There are methods which don't use dots, but they are rare.)
A third method is to look at the rear of the work. All reproduction is done on paper. It may be textured to resemble canvas, but from the rear it will still clearly be paper. Even when the original would be on paper, as in the case of a drawing or watercolour, a different type of paper is used for printing; with practice you can easily tell them apart.
a print is a advertisement that is mass produced e.g flyers, otherwise a poster are things that are entertainment that you can put on your wall or possibly even a very small advertisement such as a lost dog has been found.
A watercolor is usually done on a heavy paper specifically made for watercolor, and on close examination this should be evident. Anything that is printed will have a dot pattern in it. The dot pattern becomes visible at certain magnifications. A very fine dot pattern will be harder to see than that of a color photograph in a newspaper.
Get a very strong magnifying glass or loupe and see if it is pixelated. If so, it is a print.
Acrylic is not water soluble once dry. Watercolor can be reactivated with water.Dilute a small amount of paint in the normal manner for painting and make a brush stroke on a piece of scrap paper. Wash out your brush. Let the paint stroke dry for 20 minutes and then try to re-wet it with a brush full of water. If it re-wets and smears, it's watercolor. If it remains untouched, it's acrylic.
While it is still liquid you can tell by smell. The water based will have very low odour, oil based has heavy odour. Once applied and dried there is no way to tell difference.
I'm not trying to throw you off. But I have a beautiful Peacock water color dated '78 by Chiu Weng. Another person I ran across has a watercolor called "Goddess of Mercy" dated '78. So there are several of us now trying to find out who Chiu Weng is.
i have a wallace nutting print called the Meadow Gate...signed can someone tell me the value of this painting? thanks....email me back at tovaroc@gmail.com, as i have four of them....thank you
Get a very strong magnifying glass or loupe and see if it is pixelated. If so, it is a print.
Can you tell the difference between Vyvanse and Concerta in a drug test
how can you tell the difference between a tortoise and a turtle by shell in picture
Vending machines have laser scanners that can tell the difference between the bills.
you can tell the difference between right and wrong from the little voice inside your head
please tell me the difference between thickness
no but you can tell the difference by taste
No difference
No. You can't tell the difference, for one reason: There IS no difference.
tell me
tell me the answer
tell me