I know very, very little about porcelain - please review my conclusions and help me out....

Here is a Locke? porcelain insulator that I would like the U-number and average value for. It has the incuse symbol of a multi-part which I believe indicates that it is a Locke product. The dimensions are 4" tall x 5" wide. Top of the ears do not have a glaze so it probably was fired upside down. Inner skirt is slightly longer than outer. Incuse symbol appears to have the numbers "2260" in it --- but I may have it wrong. Overall it has a very nice glaze and nice colors. Pictured next to a CD 134 for comparison.

update: several people have ID'd it as U-667. Thanks folks...