There's a handful of items (filthy rags, broken swords, deathblades, sceptres, jewelled crowns) and monsters (orc thieves, deathblades, the deathblade 'Delmereth') that were dropped between Sil and Sil-q. Since NarSil, like Vanilla, allows multiple different items in the same grid, it allows for the tile sets to supply a "pile indicator" tile to use for such grids. I did put in some new crude tiles for filthy rags, broken swords, deathblades, sceptres, and jewelled crowns. The assignment for the "pile indicator" just points to the "?" tile. The current assignment for orc thieves simply points to the existing tile for orc scouts. The assignments for the deathblade monsters (either the ordinary ones or the unique) point to the tile for the deathblade object.

All of NarSil's front ends that support tiles expect the tiles to be packaged in a PNG file so that is what used rather than Sil-q where a BMP file is used except for the macOS front end which uses PNG. The current PNG file for your tiles adapted to NarSil is at https://github.com/NickMcConnell/Nar...hasm/16x16.png .