How do I know if I have a First Press?

[shellymcc]

I've a 1973 Pink Floyd Dark Side album with poster & stickers & believe it has value from auctions I've seen. 

This is not my forte & am hoping to get help with markings? 

[badbetty168]

Hi get a current record guide it will have the pressing info dates etc for all albums look yours up and then look at the numbers imprented on the album in question;) 

[varebelrose]

All you ever wanted to know:

https://www.discogs.com/search?q=dark+side%20of%20the%20moon&type=all

By the way, at one time I had something like 30 different versions of this album....