This preserved sheep brain is a real specimen and displayed in persevering liquid. 
The dimensions are apx 5-1/4" tall by 2-1/2" wide. 

"All life is only a set of pictures in the brain, among which there is no difference betwixt those born of real things and those born of inward dreamings, and no cause to value the one above the other.”
 blackswandive"
 H. P Lovecraft

Please note: Due to Usps shipping regulations the brain (which has also been treated with a preservation fluid) will be shipped without alcohol in the jar. You can refill it with 70% rubbing alcohol which can be purchased for about $2.00 from the drug store.