Delete Duplicate Entries, Keep Last And Delete First

I found this sample code that works from top to bottom of a spreadsheet. But I need something that will delete the first entry and keep the last entry. My data is sent from one spreadsheet to a Master and sometimes the details can be sent twice, if the responsible person forgets to enter one line of production. The criteria should be the first 5 Columns of the sheet.

Sub Dupe_Killer()
Dim str As String
Dim str2 As String
Dim c As Integer
Dim i As Integer
Application. ScreenUpdating = False
Application.Calculation = xlCalculationManual
Sheets("SAMPLE").Select
rw = Cells(2, 1).End(xlDown).Row
'Sort Data by Date, Location & Number
Range(Cells(1, 1), Cells(1, 14)).Select
Range(Selection, Selection.End(xlDown)).Select
Selection.Sort Key1:=Cells(1, 1), Order1:=xlAscending, Key2:=Cells(1, 2) _
, Order2:=xlAscending, Key3:=Cells(1, 3), Order3:=xlAscending, Header:= _
xlYes, OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom, _ ....................................