This is from the seller of the blue vase
'I am the point of reference. I had an amber version (sold 2 months ago with
the same description) with an acid mark to the base which resembled the old
Riihi (dog/lion) mark. This was enough to convince me the vase is by Riihi.
I have 7 years of reference notes regarding this vase! Online (glass
specialist) arguments get very tedious. See shape '1361' (a smaller version
of this vase. The finish, glass colour, rim, ripple/toffee base etc all
point to Riihi. It's not seguso, Leerdam, Flavio Poli etc. Those that
question the identity of this vase NEVER put foward another possible maker,
therefore I am certain it can only be Riihi (it also compares well with
other Riihi glass I've handled, regards'