This is not easy to find with clear outside ring and the rear number plate. Not available as far as I know.
"Bell On Bell Off" Button can be added for an additional £10
A pulse to tone unit can be fitted at £40 click box on check out.
I believe these were made from an original mould in New Zealand around 20 plus years ago. They were made in a small quantity and so not many around now. These have become a collectible in their own right now. This one has a clear number dial plate and clear outside alpha numeric ring. Both very unusual. Genuine GPO chassis and dial etc. Fully working with original GPO 21a electronic microphone fitted.
I can make a dial label with your information at no extra charge.