Okay, so it's not tractor related, but don't we all know someone who works at a doctor's office?
I purchased a Littman Cardiology III Black Edition from www.stethoscope.com for my wife.
She loves it, especially the 27" long tube and the special engraving!
Made in USA, and the customer service at stethoscope.com is outstanding.
The engraving on the bell I had put on is top notch as well.
It made a GREAT gift.