Sometimes we can see the same certificates in certificates store. Why is this like that? There are various stores are available for certificates. Logical store, Physical store and also we can see the certificate purpose view.

1.MMC -> Certificate -> View -> Option

2. We can change the store view.

3. Certificate Purpose View.

When we see the logical view; we can see the same certificate in the certificate store. Why is that like that? That is for a combine of the physical and logical store. For more info see http://technet.microsoft.com/en-us/library/cc757166(v=ws.10).aspx

We can verify that by comparing the serial numbers. How to compare the Certificate serial number?

Also, you can see the link for comparing the Certificate Serial numbers.

http://blogs.technet.com/b/yuridiogenes/archive/2011/04/20/exporting-certificates-using-certutil.aspx