Yes, Barefoot lists this as South Korea revenue #24.
It's from a 1948 set of eight values (plus two shades) showing four scenes from the "Tong Dae Mun Temple".
This value shows the "Unjin Buddha".
This seems to be the statue (from the Korean Wikipedia)
Described via Google Translate as:
"Gwanchoksa stone statue of Maitreya Bodhisattva (Republic of Korea Treasure No. 218)"
and
"The stone Buddha statue of Gwancheoksa Temple located in Gwanchok-dong is the largest stone Buddha statue in the East, with a height of 18m, built in 968 (19, Gwangjong of Goryeo).
Eunjinmireuk represents the Buddhist art of the Goryeo Dynasty.
It was designated as Korea Treasure No.218.
Next to the Maitreya Bodhisattva, there are five-story stone pagoda and stone lanterns (Treasure No. 232)."