u/Glaucomys_volans

This is the signature from a painting I found on this auction listing. The painting is supposedly by one "P.R. Roy" but I can find absolutely no more information about an artist by that name. I think it would help if I could decipher the signature. It doesn't appear to read P.R. Roy by any glance at Bengali that I can muster, but I don't actually read Bengali, so it might be a weird calligraphic script. Can anyone decipher it?