New old stock Grove Gear Ironman Gear Reducer 18:1 Ratio  this is from a now closed factory that kept spare parts on the shelf Splined Input shaft is a little over 5/8" out put shaft dia. 7/8" 

Ratio 18:1
ID No. M616540001YP    07916515LV  

Size No.   56WG16A 

New no box this Gear reducer it is a new off the shelf  from a closed factory that kept spares for there equipment the Gear reducer may have scratches and dust from being stored with out a box 
 

[Please Look at all the pictures they are part of the description]