Find all Doubles of same issues

Is there a way I can use a filter find all my doubles or even triples of the same issue number ? My collection is quite large over 26000 and issues are spread among multiple long boxes. I have always added the amount of copies in the Quantity field. For example: Superman #50 - 2 copies in the same box or even separate boxes in my collection. Any help would be great.

Would you like to find comics where you’ve filled in a quantity higher than 1?

If so, go to menu Search > Filter > Create/Modify and create this filter:

(Click menu Search > Filter On/Off to disable the filter again)

Another alternative is to switch to View > List View > LIST and then add the Column (View > Columns > Modify) for “Quantity” - and then click on the column header to sort by quantity.

Want to find duplicate entries?
If you wish to find duplicate entries in your collection, click menu Tools > Maintenance > Find Duplicates.