DISCLAIMER:repeating anything written in the above post may result in dismemberment,arrest,drug and/or alcohol use,scars,injury,death, and midget obsession.
I have the same Master Lock but it's not numbered on the lock. I think it's a 140D and I believe it has 3 spool pins. Someone more experienced may correct me though
no problem, it is indeed a 140D the lock will have some spools in them but the spools are such small cuts you will hardly notice them ifu get the tension right.
I believe the 'D' stands for Display, as in individual plastic packaging, where as a 140 would just be one in a cardboard box, often the case when being purchased in bulk.
The 140 and 140D should both have top spool pins. The plastic body surrounding the brass may just be a 'weather-proofing' shield. Plus, the model will vary due to the shackle length. Look for 140DLK.
and then "picked," if you will, this one: 
