Tricker's is somewhat inconsistent with what they write under Style.
It's usually some number, but sometimes it's blank, sometimes it just has the Style name (e.g. Alan), and sometimes it has both name and number.
Also they sometimes write the last number on the box.
m3616 should be also written inside the shoe, on the top of the size + fitting.
Richard or the guy from retickers should be able to tell you what is the last used for the model m3616.
They found it for me when I asked about some ostrich derby. Though the given last (11563) doesn't appear on MSAINT scan.
Richard told me he's not very familiar with that last.
Thanks. It's very hard to see what's written inside. First, I thought there was nothing there, but I see some 'scratches' that resemble letters and numbers : ). I'll take a pic so I can see it better. Who is Richard? And what's retickers?