Recently, I picked up an 1893-S/s RPM - PCGS 62 which has the largest spread of MM's I have seen - ever !! It's an FS-501. Once I get off the iPad, I'll post the images. I'l going to have a professional image taken of the coin - so the MM area is very clear and blown up a bit larger.
You can't see the spread on these tiny images - sorry - guess you'll have to wait for the larger images that will be taken this weekend ! Will post asap - but that could very well mean within a month...