John Mankameyer (1933-2015) lived for many years in Montana, then California (where he began his work as a studio potter), and then returned to Montana. His work explores the always unpredictable patterns of crystalline glazes, which adorn wheel-thrown porcelain vessels, often taking a bulbous bud vase form. (The last photo is from his Facebook page, c. 2011.)
This miniature measures about 3.75″ t. It was purchased directly from the potter.