I just picked up a clear glass vase today with the same RD no 700547 on it, so am adding pics of it for reference... ref the entry in the Blue Book, it's to S. Reich & Spolgcnost as Bernard says, but I'm wondering if the Spolgcnost should actually have been Společnost instead?
Either way, it appears to have been registered by S Reich, a Czechoslovakian glassworks, in 1923. The vase has a very crisp pattern and a clear crisp RD no, so I'm thinking this must have been made fairly early on in the life of a mould? Height is 195mm, top diameter 100mm.