Its orginal Arno Lemke?

Hello, i found painting Arno Lemke, could it be orginal? How i can check it?

 

I'm not familiar with Lemke, but here is a site which at least purportedly has some info on him and other German artists of his genre.
http://www.justanswer.com/antiques/6s6xd-three-paintings-german-artists-purchased-late.html
If you want more info here, it would be helpful to see the whole painting and a close-up of the signature.
Good luck!