Catalog number for coins from Luxembourg

Did you noticed that pre-Euro coins from Luxembourg have all other catalog numbers than those of Standard Catalog of World Coins? I think it should be KM # for all coins first (if exists) as for other countries and after that other catalog numbers.

Best regards,
Borut

Well, it is up to referee which system he (or she) chooses. The L reference for Luxembourg goes way further than KM or MB numbering, so it connects old Luxembourg coins with newer ones. For some countries, KM is making less sense.

First reference is the sorting one, and it is up to referee to make it such way it makes sense when sorted.

Best regards,
Jarek

A lot of countries' coins appear to have Y numbers as primary (notably Russia - Empire), which IMHO makes a lot less sense.
But really, whatever the referee prefers. I have no problem with using a system that also includes very old coins to refer to modern ones, as long as it doesn't produce hilarity like a page for each year (admittedly this is actually more common for older coins - I still can't figure out why each year and mint of PLC coins seems to have its own page).

Mostly it is because they are slightly different.

Y and C numbers are different catalogues that Krause integrated.

Then should be also other catalogue numbers written in short information about coin (and also in excel datasheet), that is problem.