1800s or early-1900s Austrian or Czech tea sets

PS - For the green set, the pitcher is 7.25" h x 7" wide including the handle x 4" diameter (excluding the handle), a saucer is 5.75" diameter, and the cup is 3" high and 3" diameter (excluding the handle). For the red-bird set, the saucer is 4.25" diameter and the cup is 2.5" high and 2.25" diameter.

Franz Walter Carlsbad and porzellan malerei are what’s written on your china. Porcelain painting is the English translation of the German porzellan malerei. Here’s a Franz Walter Carlsbad set I found on Instagram https://www.instagram.com/p/B8beI43HkCW/ There’s some info on JustAnswers https://www.justanswer.com/antiques/9mwpz-pieces-say-franz-walter-carlsbad.html I’m not sure if this info will be of any help, the most pertinent might be “Franz Walter Carlsbad, a retailer and exporter from Bohemia that used this mark from 1890 to 1940.” I found this on Kovels “Carlsbad or Karlsbad is a mark used on china made by several factories in Germany, Austria, and Bavaria. Many pieces were exported to the United States.” The one here https://picclick.co.uk/Antique-FRANZ-WALTER-Carlsbad-Porcelain-Teapot-Rope-Handle-154316814670.html sold for about the equivalent of $200. Not much info but these are also here on Instappraisal https://instappraisal.com/appraisal/franz-walter-carlsbad-cream-and-sugar-bowl-set That’s all I’ve found.

In case it helps further date the Franz Walter Carlsbad set (the red one), I just noticed the number 258 on the bottom of the cups.

It seems the red tea set is is Bohemian and, based on that very similar example, from the early 1900s. Re the *green* tea set, could these plausibly be Paris Porcelain? If that's the case, would that mean second quarter of the 1800s? Thanks again!