Dates On Belgian Postmark

I learn something every day on this forum!
This postmark caught my eye because it seemed so perfectly centered. The dates make me wonder though.
21 Nov
20-21 (this is the perplexing part)
1898

20-21 refers to the time of cancellation - 8pm to 9pm.

In person, does it look like there is something going on with the '0' in the '10' at top left? The left side of the '0' looks like it has an issue of some sort.

If you haven't run into the information on the tabs that are typically found on the bottoms of these stamps, this thread is worth a read:

https://goscf.com/t/12120

Scott pricing for this stamp is with the dominical tab attached. I'd say your cancel is neat enough to not feel too bad that the tab is not there.

Belgium experts pipe up and fix anything that needs fixing.

Cjd
Yes, the 10 is odd.
Here's a close up. (And no, I couldn't see that with my OLD eyes in person! Ha)

Thanks for the link! And the time info folks! Of course, I should have known, duh.

What's up with the odd 0 on the upper left 10? Anyone know?