Depends on a number of things.
- If you want to stay with period hardware use steel slotted screws
- If no concern about keeping within the Victorian style you can use what ever you want. Phillips easier to work with, steel is a harder metal, less likely to end up with chamfered edges as brass can. Brass won't rust and is shinier than steel
- If having a problem getting right size screw, or if hole is too big for modern screws, stick 1 or 2 toothpicks in hole, break them off at top of hole, and use the screw of your choice
Bob "Boardman" Borders