Two. A sealed puck of Aramis and a very old red/white box puck of Colgate, neither of which I plan to use any time soon. Everything else is can or tube.
I have around 35 soaps and creams open at the moment. A few of those are shave sticks and probably three or four creams, so around 28 actual pucks of soap.
I'm up to 115 soaps (plus about 12 back-ups). I'm now on a soap buying sabbatical. I'll refrain unless it's something I really, really must have.
I was PIFed a full Colgate cake but stupidly didn't get going on it right away...lost it's scent when I finally got around to trying it. Had to toss it out. Made me mad.
If it's that old (red/white box) would it have had any scent to speak of after 50 or so years? Still should have lathered okay. The only smell mine has is faint mustiness from the box. Not even a plain soap smell, but then I haven't wet it yet.
I've got about 15 (so far). I have an everyday soap in my apothecary mug (currently Wilkinson Sword that I am trying use up, a D.R.Harris in a special mug for special days, a few sticks in my travel kit and the rest I will work through as I get to them. I pull one out for a change of pace every now and then for a few shaves. I wouldn't recommend keeping soaps moist, especially if you have ones without parabens. Soaps and cosmetics can grow some nasty organisms and there increasing issues with recalls , mold and contamination as people wage war on parabens and other preservatives. Let the soaps dry and keep in an airtight container when not in service. You don't want to be scraping a sharp object over your skin if your soap is contaminated.
Perhaps my tossing it was premature. It didn't arrive in the box, the sender just covered it with plastic paper.
Most vintage soaps have little or no scent left for the most part. Some develop a musty type scent from decades of storage. performance would be unaffected and believe it or not some people say soap gets better with age.