According to Raymond Notley this colour became easier to produce after c. 1920 when selenium and copper were found to give a result similar to gold, and most ruby red pressed material, he says, "is post 1924". In the light of that comment I'm unsure how we're supposed to interpret Ray Slack's comments about Sowerby's 'Rubine' - a deep red translucent glass - which he says Sowerby first made in 1882. I've had Sowerby pressed bowls in 'Rubine' and it's an attractive colour, probably much the same as the piece here, but for whatever reason, as a general comment there appear to be fewer examples of pressed material in this ruby red than either clear or other colours - perhaps the failure rate for red is higher.
I thought this vase could be Czech. - the slight not toward a bird bath base, and a geometric sort of patterning - but can't find the design anywhere so far, so hoping someone might have an idea. Horizontal notching on corners is not uncommon, and bearing in mind the base wear I thought it could go as far back as the '50s or '60s. Height is c. 6 inches ( about 145 mm). Backlit with sunlight this red really is gorgeous.