ugg... just because you have not had a culture done, do NOT show him. DO NOT!!!
because you can't be positive what it is without a culture, IF it is something like sniffles it can be passed on to other rabbits.
That means if you get her something else to show, I would not keep him.
You can't be 100% without a culture that it isn't snuffles. I had to go through it, and had bought rabbits off someone who were sick. I lost half my herd. If I see a sick rabbit at a show, ugg, it just makes my skin crawl. PLEASE refrain from showing that rabbit.
and you don't get crust around the eyes. It's a snotty face. Just like a child with a cold. It's a whitish discharge at the nose. usually they try to whip their face and its on the insides of the front legs. There is sneezing and as it gets worse you can hear it rumbling in the lungs.
and if you're showing rabbits, its mean, its cruel, and it sucks, but you're not bettering the breed by keeping sick rabbits and medicating.