23 cm Crystaline Septarian Nodule with Promicroceras, Charmouth, Jurassic coast

A crystaline chunk of Septarian nodule woodstone with polished edges and walls. The wood can be seen on both sides,but mainly the reverse. This piece contains Promicroceras, Xiphoceras and Cymbites ammonites.
 
No repairs or restoration
The piece originates from the Stellare Septarian nodule bed. 
 
Lower Sinemurian, Black Ven Mudstone Member, Charmouth Mudstone Formation, Charmouth, Dorset. 195 MYA