This is definitely for a fungi lovers collections. This one is from their earlier creations as the bottom is handwritten. Later creations were engraved on the bottom. The following link tells how they were so authentic, that they were used as a teaching tool in universities (probably not anymore because of their value). Almost 3 inches tall. Here is a link to the description of a Lorenzen collection at an art gallery https://acadiauniversityartgallery.wordpress.com/2018/07/21/artist-spotlight-the-lorenzen-collection-of-mushrooms/ Here is what one might sell for https://cascobayauctions.com/auction/245-twentieth-century-art/lot-291-lorenzen-ceramic/