Instrument type
What is the item? Guitar, bass, keyboard, drum kit, or maybe an accessory like a tuner or cables? Categorizing items into types helps you stay organized. You don’t want your electric guitars mixed up with acoustic guitars.
Brand
If it’s a Fender Stratocaster, a Yamaha drum kit, or a custom-made Gibson, make sure to record the brand. It’s not just important for your records, but customers will often ask for specific brands, so you’ll want that info on hand.
Model number and name
This is important because some brands offer several versions of the same instrument (think Fender Stratocaster vs. Fender American Professional II Stratocaster). The more specific you can get, the better.
Serial number
This is where each instrument gets its unique identity. Keep track of the serial number to help with warranty issues, repairs, and if the instrument needs to be returned. Not all instruments are created equally, and this number can make the difference between a fake and a real deal.
Year of manufacture
For certain instruments, like vintage guitars, the year they were made can greatly affect their value. Even if it’s not a vintage piece, knowing the year helps with pricing and authenticity.
Condition
Is it brand new? Preowned? Refurbished? If an item’s used or in need of some TLC, that can influence the price, so you want to note it down.
Price
Keep track of both the cost price (what you paid to the supplier) and the retail price (what you sell it for). That helps you keep an eye on your profit margins.


