I have a scan of everything which is in my collection.
I started about 9 years ago when I first applied for insurance on my collection. I had no idea what it was worth, so I started inventorying it.
I created a spreadsheet using Excel, and then as I entered each stamp, I scanned it. The image scans are are in separate folders.
I had looked at a number of different "inventory" programs, but I just couldn't get them to do what I wanted. Hence, the method I use.
It works for me and it's turned into a great tool as well. Now, when I'm looking at an auction catalog, an APS sales book or something on
ebay, I can check the images I have stored and see whether I need the item or if it would be an upgrade.
Additionally, for insurance purposes, the two things - the Excel spreadsheet inventory and image files - mean I have a complete record of the collection. Or will have when I finish....