Wow, congratulations Daryl, you've been very observant. I always look carefully at every coin before adding and I've never noticed this. Of course, I just rechecked these coins and now I saw it too. And not only at the KM# 633 but also at the similar KM# 632 (5 centavos 1994-1997) and KM# 631 (1 centavo 1994-1997), although a much lesser percentage for the 5 centavos and less distinct for the 1 centavo.
if you have the possibility to send me some high resolution images of those coins (km631 and 632), I'll be happy to document your findings as well? I'm not in Paris for the moment, so I can't check my own coins for this variant, so since you have yours out already?
Hi Daryl, hahaha, after rechecking those coins I put them away again. And afterwards I saw Ole's question for pictures of it, but then I was already busy with other stuff. But I will take them again and make scans.
On the 5 centavos it is very clearly, although the percentage of coins who have this struck through is a lot less than on the 10 centavos.
On the 1 centavo I found this struck through too, but only partial, not all the digits of the date and in a small percentage. But of course that can be coincidentally because the sample size isn't that big (1 centavo: 9 coins, 5 centavos: 20 coins, 10 centavos: 30 coins)
Sorry Daryl, still haven't searched for those coins again but I certainly will.
In the meantime I noticed this struck through problem not only occurs on that 10 - 5 - 1 centavos 1994 - 1997 series but also on other types like the 1000 cruzeiros 1992 - 1993 (https://en.numista.com/catalogue/pieces5392.html):
Here you can see how "BRASIL" and "1000" are struck through (red arrows):