This is what I keep: style name, date of purchase, cost, color, year of manufacture and style number. I also have a place to put which scarves or fobs I use with the bag. I have them categorized by size. I also have categories for wallets, vintage, scarves, fobs, coin purses, etc.
For my vintage bags I keep the full creed number to help with authentications, and if I have the original hangtag (I started doing that because I remove them when I rehab so it reminds me whether I'll be able to find a hangtag to put on when I'm done.) I also am trying to take photos of everything in my collection.
I don't keep the original retail price but you might want to. It might be nice to have a stock picture too.
Thank you!! That's great advice!! I love the stock picture idea. So far I have found a stock pic on 1 vintage bag....I try to get a catalog listing from the way back machine. Oh I picked up another rehab project today (a golden yellow Janice from '95).