Roger,
Thank you for that, and I have already been conferring with Peter on this as well. I haven't declared all my cards on the open site for obvious reasons, but as I was finding it hard to find any two L42's showing the same slight variations on marking or characteristics, I thought I would ask those in the know on the site, for a list of the obvious ones to reconfirm my beliefs in case I had missed something over the years.
You can perhaps read between the lines that we have collectively come to the same conclusion, but I am now curious as to how it rose from the ashes so to speak, and will look at it myself, and decide on a course of action from there.