Devoucoux and Antares Stamp De-coding

I am currently looking at a saddle for sale and am trying to understand Devoucoux’s coding. The stamp, besides the seat and flap size, says 3PC D3D.

What does the 3PC mean?

Thank you in advance. Please feel free to provide any input on decoding an Antares or non-D3D Devoucoux.

Bumping this really old post to see if anyone had the answer. Trying to find out the same info