It is a frequent requirement to produce labels bearing incrementing numbers. There are at least a couple of ways of doing this as illustrated below.

The default prompts are for the numbers to start at 1 and the six asterisks. You can change these in the dialog as required - Here I have changed the start number to 155:

Sub FRWithSequentialNumber()

'Finds a specified text string

'and replaces with a sequential number
'Macro created 22 August 2005 by Greg Maxey,

' with modifications by G. Mayor
Dim findText As String
Dim startNum As String
Dim myRange As Range
Set myRange = ActiveDocument.Range

'define default number - here 1

startNum = InputBox("Start sequential numbers at:", , 1)

'define default search string - here six asterisks

findText = InputBox("Enter text to find", , "******")

With myRange.Find
    .Text = findText
    .MatchWholeWord = True
    While .Execute
        'define number of digits - here three

        myRange.Text = Format(startNum, "000")

This method is better suited to labels on which only the number itself changes, such as tickets, serial numbers etc.

Excel makes the production of a data file simplicity itself. In cell A1, give the first column a title. In cell A2 enter 1. In cell A3 enter 2.

Select cells A2 and A3. This will 'highlight' the cells as shown in the first illustration.

Hover the mouse by the bottom right handle of the selected cells, and the cursor will change to a '+' , as shown in the second illustration.

Right click and drag the bottom right corner handle down until you have as many numbers as you require.

Save the worksheet.

You can re-start the process from the next required number when you need another batch of uniquely numbered labels.

Create a merge document to mailing labels (see Mailmerge Labels with Word XP) and attach the data file that you have just created. Insert the merge field and any supplementary text you require and merge to a new document or the printer.

Sometimes there may be a preference for a number to read up or down i.e. at 90° to the body of the label. This can be achieved, but is rather fiddly, and you may wish to consider it as a two stage process - first the numbers, then the text. Or you could adapt the method described in Graphics on Labels only this time, the 'graphic' is the fixed text.

However, if you are not deterred, the split cell method is perhaps the most logical, and most frustrating to achieve if you do not follow a strict order of assembly as described below.

Begin with a standard label merge as in the previous example - see Mail Merge Labels with Word XP  and display the field content (ALT+F9)

You will note that such a mail merge inserts a {NEXT} field into each cell but the first. You can ignore these for the moment.

Select each column and from the table menu, select 'split cells' and split the table into two columns for each original of the original columns.

You will notice that the {NEXT} fields get screwed up, which is why we displayed them in the first place.

Delete all the {NEXT} fields.

Enter the serial number merge field from the Excel data file, as in the previous example in the first cell.

Propagate the content to all the cells. This will replace the NEXT fields, but will also produce a host of redundant data in the alternate columns.

From the merge toolbar, change the document type to Form Letter (Letters) so that Word will not try to repopulate the cells. Propagate will no longer function.

Select and delete the content from the additional cells:

Select the remaining cells and rotate their content using the tool from the tables toolbar.

Drag the right column borders of the left cells of each column pair to accommodate the fields. Note that because the field display occupies more space than the eventual merged numbers, the resulting merge will occupy only one line. Thus you can make the columns narrower than in the illustration, apparently losing some of the content, without it causing a problem in the eventual merge. I have left all three lines showing for the purpose of clarity.

So much for the numbers. The next step is to add the fixed text.

Enter the fixed text in the first empty cell.

Select the fixed text and copy to the clipboard (CTRL+C). Then select the empty columns and paste the clipboard contents. This will fill each cell with a copy of the fixed text. It will also destroy any cell alignment that was originally present.

Apply any paragraph formatting you wish to the fixed text, then merge to a new document:

It would not be too difficult to adapt the same technique to display the serial number on the right of the label, or to have the serial number as the horizontal text with the fixed text rotated instead.