PSC and Battlefront both make 1:100 models of this characterful early tank. I've compared them to each other, and made some minor additions.
The PSC model is pre-assembled and undercoated green straight out of the box. It comes in a pack with a Saint Chamond, and is available from PSC for £16.50 at time of writing. Neither model has machine guns, so I drilled 1mm holes with a pin vice and used some poly cement to add 1mm plastic rods which I then cut to length. I added a wire-cutter from some Evergreen H-column styrene. (This had been cannibalised by me from another project, so it is painted rather than the original white plastic.)
|PSC Schneider CA1 with added wire cutter and MGs|
|PSC Schneider CA1 with added wire cutter|
Battlefront's model is a resin hull with white metal tracks and MGs. The resin didn't need any clean-up, but the tracks needed work. (My trick is to cover flaws in mud post-painting). I added the wire-cutter in the same fashion. You get two for US$30.
|Battlefront Schneider CA1 with added wire cutter|
Side by side, the models are the same size. There are subtle differences in the placement of panels etc. The details are a little more exaggerated on the resin model- panel lines, front grill, and rivets. The white metal MGs are nicer than my plastic ones, but more fragile.
Watch this space for painted pictures!
(Here's the St Chamond with added plastic MGs)