Two vases, likely WGP, late 50s/early 60s

Fellow members,

I recently purchased two beautiful vases in matching decor at a flea market in Vienna but so far I haven't been able to identify the company who produced these vases. I don't remember seeing this specific decor before and only one of the vases has a (somewhat legible) form number (3650) but sadly doesn't lead to any results in a Google search, so I'm currently stuck. It's also possible that I've identified the form number incorrectly. Therefore I hope that someone who might be familiar with the decor can enlighten me. I assume it's of West German origin and judging by the colors and design likely from the late 50s/early 60s. Any help is greatly appreciated.