Framed watercolor painting of Brighton Pier

I found a framed watercolor painting this afternoon around 3:15pm outside the Royal Pavilion on Marine Parade. It’s a roughly 12x16 inch piece in a matte black wood frame, showing a moody seascape with the Brighton Pier and a bright red lighthouse off to the left. The painting bears the signature 'L. Hartman 2019' in the bottom-right corner. The frame has a small dent along the bottom edge and a minor scratch on the glass, but otherwise it’s in good condition. I’m hoping to reunite it with its owner—if you can describe the painting’s title, the signature, or the back-of-frame tag, I’ll get it back to you quickly.