hi - For glass, the only crossed swords mark I can see in Ivo Haanstra's Millers 'glass fact file a - z', is for Brockwitz (he quotes c. 1928), but that apparently should incorporate an upper case B, so possibly no connection ................ appears everywhere on ceramics of course.
Seems their factory was in the Meissen area - quite a coincidence bearing the mind the porcelain factory of the same name - who did use a very similar mark. The No. will simply be the pattern reference for the decoration, I would imagine.
Perhaps either Pamela or Anne Tique might be able to add more. Nice little pot by the way.