Chinese Song Dynasty Qingbai Tea Bowl

A Chinese Qingbai tea bowl, possibly Song Dynasty, covered inside and out in an ice-blue glaze with an unglazed rim. There is a small character etched to the interior, probably a previous owner's mark (see last photos for close-up). Measures 8.5cm in diameter at the rim and 4cm tall. There are two small chips to the rim, otherwise in excellent condition - please see all photos for confirmation.