Cy and Edna Peterson began production of Clay Sketches figurines and vases in 1943 and operated until 1957. California potteries produced many items for commercial, industrial, and home use from the 1930s until the 1960s. The greatest time of production was during and just after the war years as the USA was not importing ceramics or other decorative items due to World War II. Once Japan re-entered the market producing inexpensive knick-knacks, vases, figurines, and kitchenware, US production of these kinds of items declined.
Clay Sketches often featured birds. To sell these cute vintage bird figurines and vases, they need to be in perfect shape. While I have seen one such item on Etsy for $119.00, that is a high asking price. Look around online for similar sales, and you will see that comparable objects sell for between $10.00 and $40.00. Remember that many of the prices are the asking price, not what the Clay Sketches actually sold for. Sites like Worthpoint will show the selling price if you are signed into the site.