This is a small petzval that would suit a Baby Graphic film size or possibly even medium format. Details: The focal length is approximately 3" and is approx f2.5. The image circle is around 3 inches. Height is about 2 1/2" and the barrel width is about 1 3/4". Usual cleaning marks but nothing to affect your photos. I don't have a socket long enough to remove the front element completely. It might have some separation around the edge, but if so, it didn't affect anything I could see on the ground glass. These shots were taken of the lens mounted on a 4x5 back, so you can see the size of the image circle, and the great falloff that you want with a petzval. Price: $95 shipped in the USA from the currently gloomy and overcast Midwest. USPS money orders preferred. Paypal accepted. I will ship overseas but the postage will obviously be more. If sold to Australia, I can accept direct deposit.