How do 1099-K requirements work with "Collections"

[earthprime1234]

If I bought 5 comics throughout 2020 (at separate times), and then sell the 5-comics as a lot in 2023, how do I record the "original-purchase date" on the 1099-K?  There are 5 separate original-purchase dates.

"Original Purchase Date" is needed if you sell something at a loss, to avoid paying taxes when you didn't actually earn income.

[monica-sells]

You do not do anything "on" the 1099-K (it is an information form to you)

You record the amount "from" the 1099-K line 1 or 1a (gross sales) on your 1040 Schedule C then deduct your purchases as COG  (as well as your selling expenses, fees, shipping etc...)

OR...

(since you mentioned dates of acquisition) your Capital Gains/Loss sheet (Form 8949 which requires date of aquisition) but no spaces for selling expenses....

This is street advice. Check with a qualified accountant.....

[heckofagame]

The 1099-K is sent to you AND the IRS. 

[dbfolks166mt]

     As others mentioned the 1099 is your revenue and is not directly related to your expenses which is what your acquisitions are/were. As to when you record, or should have recorded, those expenditures is dependent on what type of accounting you use if you are filing a schedule C. There are two basic types accrual and cash and both have their pro's and con's but you have to declare which type you are using on your schedule C and once declared it is difficult to change. 

     There are a lot of factors regarding taxes that are difficult to respond to simply because detailed insight into your business is required and those are details you probably do not want to disclose on a public forum. Best to talk with a tax professional or an account to get things setup and established then you can probably handle subsequent years on your own using some type of tax software.