I have one Sue Parkhill painting that has been in my personal collection for 35 years. The one I have I love, but it certainly was not my favorite that I sold over a half dozen years from my gallery. I am pretty certain that "Sue Parkhill" was an alias, for another artist. During the 80's multiple artists produced work using various methods including oil silk screen techniques that were enhanced and sold in a mass market way. I met some of the actual artists during that time frame and new them by their real names as well. Sue Parkhill was not among them.
About ten years ago, a dear friend and extremely talented artist had a small shop where even then preprinted canvases would come in and she and her helpers would paint over them adding the details, the highlights, the touches that would bring them alive and make them pop. I am sure that production art is still being produced more than you know. That while a huge amount is produced in the Asia, much is still being enhanced here.
I have been a gallerist for over 35 years, had multiple galleries, and worked both as an artist/designer as well as being an arts advocate for over 45 years.
As such I have run multiple arts festivals, judged hundreds of shows, viewed thousands of paintings by multiple hundreds of artists. And to date I still have found few seascape artists whose work I love as much as the better Sue Parkhill's. So in conclusion I still love my Sue Parkhill, I still hanging it in my office or home, right along with other artists who I have know for years or appreciate.
As a gallerist my advise is to buy work that speaks to you, that makes you dream, that carries you away, that inspres you. Decades later this seascape still inspires me.