trying to learn about Lugers

[sxtsvnstang]

Now that ive succumbed to the addiction, can you guys help me learn a little more. I see when other people post pictures of their new guns, a lot of you can say right off the bat that you know its a navy, or commercial or has swiss grips on it, etc. I love how vast the variety is of the little details that go with lugers. can people post some pictures for me of the different variants or parts that give away a little history of the gun? and maybe a list that can describe what the serial numbers mean? if you read my post about building a gun, youll see that i got the frame. the serial number is 7367 and GT tells me that its a D.W.M. what are the tell tales that let you decipher the history of these guns? I appreciate any input and help i get. Thanks

Tom