This is one of my favorite ink sets. My teacher at Ohio University was Arnold Gassan. Arnold wrote one of the definitive text books on the history of Photography. His text books are still highly sought after.
Arnold taught me most of what I know as a darkroom printer. He encouraged me to study the chemistry of photography. Although his tutelage was difficult (at best), his insistence that we make our own chemistry, fully understand the zone system, and become skilled practitioners of the darkroom was very influential in my later work as a development printmaker.
Arnold was very ill in his later life, suffering from terminal cancer. We had been in contact frequently and I was helping him to sort out some digital workflow. I asked Arnold to make me the definitive short-bath Selenium toned print on his favorite Ilford fiber based paper. That print was used for the *ab values to formulate Selenium K7 inks.
Selenium K7 is one of my favorite inks because I like Selenium toning – and I had so much respect for Arnold. Selenium was our first glossy compatible ink set when used with Photo Black and the Gloss Overprint. Now all K7 ink sets are glossy compatible.
On JonCone Studio Type 5, an images "look" can be reminiscent of warm Agfa paper.