Spot on. It could in theory be a class 1a2, 1a5, 1b1, 1b2 or 1c, but 1a2 is immediately ruled out because there is no square C or E and 1a5 because there is no stop after LVND.
The others rely on observing a stop between S and R on the obverse (present on 1b1 and 1b2, but omitted on 1c). The round C and the R are clear enough, but is the gap between the two letters big enough for a stop? I'm not sure.
In the end it doesn't really matter, because the coin is pretty much toast, but I enjoy getting as far as possible with these hopeless cases.