This pattern is called "classics" its quite rare. Released in the UK to a limited test market. It only came it 2 sets, a chip and dip and a party bowl set. The chip bowl is the size of a 443 rather than the usual 444 and is actually called a "mix n serve set" rather than chip n dip.
Vernon Kilns Early California Sugar Bowl in Pale Yellow Vintage Pottery
A great example of early California pottery, this is an angular sugar bowl made by Vernon Kilns, in a pattern appropriately called "Early California." The bowl is glazed in a pale yellow color, and is in excellent condition. It is missing the original lid, but is still very useful today as a serving dish or catch-all dish. There are no chips or cracks- the only flaw seems to be in production- a few raised spots underneath the glaze, which are present on the bottom of the piece. Measures 6.5" from handle to handle, and 2.75" tall. Ships via USPS Mail in protective packaging, with insurance.