Lee Reloading die ?

[300 RUM]

I am going to start to load for a 223. I was going to buy a new die, then my father gave me a set of Lee dies. They appear to be in good shape. My dad always buys every reloading item he sees at yard sales. I have a feeling that is where these came from since every new die I have seen him buy are RCBS, all his Lee dies have come from yard sales.

My question is they look to be in good shape but What do I need to look for to see if they are ok before loading.

Also is there anything different to setting up a Lee die compared to an RCBS. Everything I have is an RCBS die.

The number on the die set is LEE-223-84