The embossing on this Kerr example is by far the most outrageously unusual I have ever seen. While some of these are so badly manufactured that they can be interpreted as a Kerr No. 222, this one outstrips even that. Kerr No. 2202? Kerr No. 202? The last 2 is very faint and not fully formed - Kerr No. 220? Kerr No. 20?