Postmark Picks: Belgian Railways flip-flop

One of my favorite areas of postmarks to collect are the postmarks on Belgium railway stamps. They are generally dark and socked-on-the-nose, to the point where they just looked like damaged stamps to most collectors. And you can find large quantities easily. For a while, their classic ticket-shaped postmarks had some real ambiguity in the year. This one looks like 1934: But it's really the hour (19) and two-digit year (34). This one looks odd, as we know there were no postage stamps in the year 947, but "-947" is again the hour and year. If you could trust that this was always the case, you could figure this out at a glance: It would be hour 18, year (19)13. But it's hard to be sure. Because sometimes, the year does come first: (19)53, hour 16. Why? Pick a format and be consistent. In case you're thinking it just changed over time, here's one from the same exact year AND hour, flip-flopped: I have no technical data or secrets to sha...