Landships II

Strelets have shown four teaser pictures of artillery kit prototypes. Can I kindly ask you which types these are, since Strelets didn't tell. Thanks in advance! Pat

1.) Am I correct in assuming this is a Canon de 105 mle 1913 Schneider, or one of its WW1 Russian or WW2 Italian cousins? Wheels look non-standard though.

2.) Very similar, but look at the carriage "cheeks" - not rounded as in the Schneider but rather angular, so...? Maybe this was a 1/72 kit prototype and Strelets have changed it into the one shown above.

3.) de Bange 155 mm long cannon mle. 1877?

4.) British colonial artillery piece?