Potential Lifting Strength upgrade in Color Splash.
Mario can pick up that big giant coin. I know it blips away like most other coins but Huey and the coin counter acknowledge that Mario has obtained it and is canonically carrying it.
As we all know, coins are made of gold, so that could potentially be an upgrade to their Lifting Strength. Potentially a Class M thing. But a calc would need to be made.
Got scans of it? IIRC, Mario is roughly 1.5 meters or so. It might be 151 or 155 or such; It's based off of some "life-sized statue". But for simplicity's sake, & because I'm lazy with bad memory, I'll say 150 cm.
Let's say the coin is 10 times his height. 15 meters.
A coin is just a very big cylinder, just standing on the round part, rather than on the base. Half the flat part, AKA, the base radius, so 7.5 meters. Then the "height", AKA how thick the edge is. Let's generously assume twice as thick as Mario is tall, so 3 meters.
That gets us a Volume of 530.14376 m3 (Cubic meters)
The density of gold is roughly 19,300 kg/m3 (Kilograms per cubic meter.)
Mass is equal to volume * density.
So for every cubic meter, there is 19,300 kg. AKA, remove the measurements, & multiply 530.14376 by 19,300.
10,231,774.568 kg (Roughly 10-point-2 million kg.)
Class M is 1 million to 1 billion KG,
so this is anly about a little over 10 times baseline Class M. (& about 97.73 times below Baseline Class G.)
Keep in mind gold's density varies with its karatage; If it's not 24 karats (100% pure gold.), its density may vary & be more or less, depending on the other materials. Similarly, if the big coin is hollow, it may be lighter.
Also, in Buoy Base the Torpedo Ted can fully pulverize the iron ball inside it's cage in Galaxy, and it also pulverizes the metal around the glass, with the glass being the only thing that's shown to have fragments. The iron ball inside is pretty large. Probably worth a calc, but I guesstimate it's 8-C+ to High 8-C
Scans?