Just want to agree that a LOT of things on it look like something in the RG/Rohm family tree, including the overall frame, the rear sight "hump", even the font and background in the grip medallion. I would be willing to bet it's an RG/Rohm type in which case +P is completely out of the question and I wouldn't test fire it at all without a padded bench vice and 100yds of fishing line tied to the trigger.
A truly detestable gun. The only thing you could buy more likely to blow up is an early 20th century Spanish copy of an S&W breaktop. EWW!