In military ordnance one of the toughest countries to find items from (and most expensive) is Japan.
While I don’t focus specifically on Japanese ordnance, over the years I have had the good fortune to locate some very rare items. Here are a couple that are seldom seen by the typical collector.
On the left is the Frangible Glass Smoke Grenade. All of the US references list it as Type unknown, I am sure that there is a Japanese designation but I have never been able to confirm it with actual documentation. References identify it as being filled with a mixture of titanium tetrachloride and silicon tetrachloride.
On the right is the grenade identified in US manuals as the 172 B-K Gas Grenade. Filled with Hydrogen Cyanide (HCN) it was a bona-fide chemical weapon, though of limited effectiveness.
I’ve had the smoke grenade for some years, but got a tip last weekend from an IAA member and just received the HCN grenade today. I’ve only seen one other.
Now I just need to seal the two of them in concrete…