Chinese Rectangular Jade Plaque, Stand

Chinese jade plaque, of rectangular shape and carved to the front with a reserve featuring five bats around a character roundel all framed by pierced tendrils and confronted mythical beasts, the reverse with a long poetic colophon signed 'Zi-gang', the matrix of a even translucent pale green hue, the wooden stand carved as a twisted tree trunk, plaque: 3.5''h, stand: 12''h