This is an IBM 3-button mouse (FRU 76H5084) from a 7006-42T workstation.
This mouse has a non-DOA warranty. This DOA warranty is valid for five days after delivery of the mouse. Please test the mouse promptly upon receipt. This means if the item is Dead On Arrival, I will refund your purchase price (buyer is responsible for return shipping charge). This warranty only covers DOA mice. If the mouse is returned and tests good, I will consider the mouse non-DOA and I will ship it back to you at your cost.
No other warranties, expressed or implied, are included with this item.