New lamp - no bulb! :(

[Anthony Dang]

Hi everyone,

I recently picked up an awesome retro Carramar lava lamp at a market, but it didn’t come with a bulb. I'm not sure which one to use, and I definitely don't want to damage it by using the wrong kind.

It’s requires a 30 watt E27, and it needs to be flat/domed to fit the lamp above it.
I tried going to Bunnings, but they only had round globes which the bulb was too large to house the glass lamp above. I’ve attached some pictures to help identify it.

Also, I'm based in Australia, so any recommendations on where to find the right bulb locally or online would be really helpful!

Thanks in advance!
Ant