OK, so now I have confirmation on the shape.
Onto the tip quality:
My tip is at least 12 years' old. During that time, however, it's hardly been used at all (cue has been in storage).
The tip is quite hard but still seems to hold chalk reasonably well. I've no idea what the brand is. I think its 12 mm.
1) Should I be considering a new tip?
2) If so, what is a good premium brand to buy?
3) What hardness ought I to consider? I'm looking for being able to put spin on the ball easily.
4) How does tip size/width affect your shots? Accuracy, English etc.
5) Best ferrule type - ivory, carbon fiber, plastic, phenolic resin, brass?
6) Rounder tip = more English on cue-ball?
Thanks for any advice
