Snail serving dish, oil lamp, tea pot and tea set. Please help identify these pices.

Hello everyone,
I have bought few pices at an auction, but don't know anything about them. I would like to ask if anyone would like to comment on the age and if they are collectabe. Should I keep any of them?
I am learning about antiques and this is the easiest way for me to see the pices.
1. Snail serving dish bought it as " Antique serving dish, possible French" . It has a stamp number letter inside the lid, but can't make it.
2. Oil Lamp, sold as " vintage", it has a mark on it " Made in Hong Kong
3. Tea set bought as Victorian tea set, has some numbers on the back.
4. Victorian tea pot, has a V On the bottom.
Thank you.
Kind regards,
Simona

 

Can you show the base of the teaset please? And the teapot?

The little oil lamp was sold as a decorative item in the 60s. They're of little value, sadly.

 

The tea set has some numbers on it with T for some cups and some have gold three lines marking. The desert plates has a H or an N, and the saucers has some lines markings.
The black teapot has a V like letter in gold.
The most expensive was the snail dish out of all, it has some numbers making inside the lid.