Coin Block

From the Super Mario Wiki

A Coin Block is a Brick or ? Block that gives the Player a coin; also, the term is often used for a block that gives Players multiple coins. They have appeared in nearly every Mario game, debuting in Super Mario Bros.. For blocks that contain multiple coins, in most games there is a time limit for how long it will continue to give you coins, instead of actually having a set number of coins. In New Super Mario Bros., striking a Coin Block enough times will produce a Super Mushroom.

In Super Paper Mario, if Mario flips, he can see an image of a coin on the side of a block that gives him multiple coins.

Blocks

! Block | ? Block | ♪ Block | 4-Bros. Random Block | Arrow Block | Aurora Block | Black Block | Bonus Block | Brick Block | Bros. Block | Coin Block | Command Block | Control Block | Dice Block | Dotted Line Block | Drop Block | Egg Block | Event Block | Expansion Block | Giant ? Block | Giant ! Block | Grab Block | Green Block | Heart Block | Hidden Block | Hint Block | Ice Block | L Block | Laser Block | M Block | Marshmallow Block | Metal Block | Minus Block | Mushroom Block | Perry Block | Pink Block | Plus Block | POW Block | Pushing Block | Rally Block | Random Block | Red Block | Rock Block | Save Block | Shine Block | Simu-Block | Spin Block | Star Block | Stone Block | Super Block | Triangular Block | Turning Block | Used Block | Warp Block | Wooden Block | Yellow Block | Yoshi Block