What the listing says but has not yet been seen in the emulator, and what is not known.
The 10 ryo of すきやねん, "continue" when exchanging item 3, the eight hits on type 0x21, the 50-ryo blocks, the dice and the four endings. They are all in Findings, with their address; none has been tried in play.
It has a price in the table and its routine is the life one (p03:AEB2). That routine adds B to life: items 11 and 12 set B to 16 and 8 before getting there, but item 14 jumps straight in with whatever B holds. Since no shop sells it, how much it would give is unknown.
It is not in the lists of the cells and nothing has been found that creates it. Figures 0x12 and 0x1D belong to the end-of-stage scene, but 0x1B is unknown.
It has an entry in the table, but its first pointer goes to the silence and right behind it effect 0x20 already begins (0x663A). Whether anything asks for it is still unknown.
If a shop has nothing for sale, the djnz at p03:ADB2 falls into the table at p03:ADB4 and runs it as code. What it does then has not been seen.
Besides the secret passages, the game has other passages (0xC483, bank 15: their holes and their pieces). They are in the listing, but have not been drawn yet.