Does 2010 Peugeot 107 radio need code

Ask the seller?

I don't think the car determines if a radio needs coding. It is the radio that needs to code. Most sellers would either state that fact on the listing or even write the code on the back of the radio.

If you look at the cars services books & manuals the radio code is normally written in there.

Can't see a seller selling you a radio that needs a code without supplying one. (edited)

Might as well just upgrade her to something better, can buy radios with Bluetooth and DAB etc cheap enough now, be a much better option than buy an original