The limber on the left is the DINKY TOYS ref. 687. The one on the right was made by
which in English seems to meam "War Technologies" (do correct me if not).
The last picture from diecastduck shows a small gun which is probably the British 25 pounder. Was this also made by "War Technologies" at the scale of 1/59 like the Dinly Toys ref. 686 ? If so we are probably missing the artillery tractor to pull the gun and limber.
Picture by courtesy of M. C. Barres-Baker.
The artillery tractor should look like this.
I would welcome large pictures of the russian 25 pounder as well as any copies of Dinky Toys.