A quite unusual item has come up on the Yahoo.jp auctions. As it appears to be a "working" reference, rather than just a text on the subject, I thought some of our members might be interested.
Small orihon (accordion fold book) depicting various types of fire arrows or small explosive devices (gunpowder-based).
Small and dense explanatory text and images on both sides. The actual document was pasted onto a heavier paper. The size of the document, plus the heavy reinforcement of the backing, suggests this was a "working" reference document, to be carried in the sleeve or inside the kimono.
Condition: Fair - aged, stained, foxing, wear, edge damage, slight separation of the backing in some areas.
Auction ending: January 26