This photo was shot directly onto positive paper - no film or negative, no enlarger, no contact printing. The Harman Direct Positive paper is inserted into a film holder then into a vintage large format camera back, and exposed through a hundred and fifty year old lens. Much like "Wet Plate" photography, but without the need to develop immediately after shooting the photo.
The exposed paper is then taken into a darkroom and developed with conventional B&W paper chemicals. Lighting is critical. The exposure has to be correct, there is no way to adjust the exposure in the darkroom.
This is not enlarged - we used 11x14" size paper in the corresponding size camera.
Unfortunately, you cannot obtain this paper any longer - Here's a direct quote from the Ilford website: