Here's yet another accessory with an exploding feature: the Marx Exploding Ruins. Mine is woefully incomplete, with only the exterior wall piece intact. It's missing the roof, door, inner wall, and spring loaded 'detonator'. The first photo (from Toy Soldier HQ) shows an intact example
Okay, so while I don't have a complete example, this one wall piece still makes for an excellent battlefield diorama piece. It measures: 6.25" (15.87cm) W x 2" (5.08cm) D x 3.5" (8.89cm) H. Tomorrow, I'll post my repo Exploding Ruins set. Be Blessed and Relish Life! Ed