Is 63 grains as heavy as a Playing Card?
It's about two-and-a-half times as heavy as a Playing Card
The weight of a Playing Card is about 28 grains.
(ISO 216 B8 size, 2.5" x 3.5")
A single ISO 216 B8-size playing card weighs 28 grains. Although this size is the most common home playing card, many casinos use "bridge size" cards — 2,640 sq. mm (4.036 sq. in) smaller in area.
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