Many times I wondered how can I get PublicKeyToken of DLL file so for that here is the found trick to get it using PowerShell, below is the statement to be executed:
([system.reflection.assembly]::loadfile("C:\SomeDLL.dll")).FullName
The output will provide the Version, Culture and PublicKeyToken as shown below:
SomeDLL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a