I sent the wrong item, How to proceed?

[k-f]

I had an auction for a lot that  (I have several similar ones of and ) I sent the wrong lot.

I was gong to refund his money ask him to return the other and just send him out the other.  

I'm not sure if that's the best way to go as I ve been reading different ways to do this on ebay.  

[simba6]

The official eBay way is to have them file an item not as described case and you issue a paid return label. You then send the correct items when you receive the others back.

[mtgraves7984]

I'm with @simba6, but another way of handling it would be to do a package intercept. Although those cost more than your return shipping cost would...

So I'm still with @simba6. Good luck.

[12345jamesstamps]

I usually let buyer keep wrong item and refund them first....to save my feedback.

Or send correct item and let them keep wrong item...never know what a buyer will say in feedback.

[k-f]

Well this has become complicated 

I told the buyer to ask for a replacement  

he filed item not received I called eBay he helped me send him return postage and told me I should wait for the return item to be shipped before sending out the right item , 

I may just send it out and hope he returns the original . 

this is vintage Boy Scout merit badge w sashes so I do want the other 2 back. 
eBay saw the messages between us so knows he misunderstood the directions.   
thanks fir the help .