Mystery Printing Block

I have a weakness for printing blocks. It's the kind of weakness that could result in being overrun by a large collection in a very short space of time so, unusually for me, I have exercised some level of restraint and discipline and only buy them occasionally when I find something particularly interesting. This one (reversed in the scan above so as to be 'as printed') I liked for its slightly-Beardsley, slightly-Erte style. Infuriatingly it is actually signed in the block but I can't read it. However, it looks like one of those distinctive signatures that, if you know it, you would recognise it, so I thought I'd just throw it out there...