Hi
Definitely an Arculus or Walsh Walsh piece from the 1920s-1930s. It is hard to distinguish between the two, because Walsh Walsh bought the Arculus factory, and the same workers continued to make the same products for a time...! In my experience at least one third of the paperweights, and most inkwells carry the fake '1848' date. Occasionally the numbers get a bit squashed, or out of sequence, so other 'dates' can appear.
Alan