What do these numbers mean on my laptop RAMs?

[Totos]

My mom's boss gave me 3 laptop RAMs (or atleast I think they are for laptop) since he said that he bought the wrong ones. However they were given to me without packaging and I don't know what the numbers on them mean. I want to sell them since I have no need for them right now but I don't know what specs to post on my ad.

The first RAM shows these numbers:
1GB 2Rx8 PC2-5300S-555-12

And the other two which are the same shows this:
2GB 1Rx8 PC3-12800S-11-11-B2

 

[Brillis Wuce]

The first 2 photos are of DDR3 1600MHz RAM with a CAS latency of 11. That's pretty standard laptop memory.

The last one is much older RAM. It is DDR2 667Mhz RAM.

 

[Totos]

The first 2 photos are of DDR3 1600MHz RAM with a CAS latency of 11. That's pretty standard laptop memory.

The last one is much older RAM. It is DDR2 667Mhz RAM.

Thanks for the info! How much do you think I can sell them for?

 

[Brillis Wuce]

4gb of 1600MHz RAM (used) = $15-$25

1gb of 667MHz RAM (used) = $5