Folk's,
This is the Acedamy kit of the M-12, it was built OOB but the replication for the mud was applied sawdust, coated in white glue, when dry then coated in acrylic earth with pastels added to the mix, pastels were applied overall to tone down the finished model.
It was originaly built some years ago for the importing agents to use on their trade stand at a toy fair, from there it was displayed in a shop untill just recently.
Rob.