This doesn't have a logo, but I bought it because everyone said it was an early 314 model. Judging by the lack of markings, I think it's a 314. I haven't used it at all recently, so I'm putting it up for sale. I recommend replacing the tip. Because it doesn't have a logo and I'd rather someone use it than let it go to waste, I've set the price low. Price negotiable! Thank you very much.