About this 3D model

For a figure Ayanami Rei in School Swimsuit. I bought her from Japanese 2nd hand shop but she doesn't come with the pool stand. This pool stand is made using the reference from various website. Turn out the model has many variation (or copies?) and I think this is the legit design. The model seems to go by the name "SEGA Rei Ayanami Extra School swimming Figure Summer Drops" This object was made in Tinkercad. https://www.tinkercad.com/things/csbCbt8rCuo