This bowl is a Chung Jung Ho or Big Edo style tea bowl. This style of bowl differs from the Jung Ho (Edo) style in only its size and shape. Big Edo tea bowls are noticeably larger than Edo bowls, forgoing a bit of their soft gracefulness for sturdy grandioseness. When cupping the Big Edo bowl in one's hands it relays a sense of empowerment.
The other difference is its shape. The side body of Big Edo style tea bowls display a steeper incline than Edo style bowls. This effect makes this bowl less subtle than Edo style bowls. Consequently, when one drinks from a Big Edo bowl the tea embraces the mouth less gracefully and slightly more forcefully due to this difference.
This bowl pictured is a wonderful Big Edo style piece by ceramic master Jung Jum Gyo.
Peace