Model number for late model corn binder

[chcase]

Had a friend ask me what the model number was for a late model case pto 1 row corn binder was. He stated that it had all metal, no wood. Only seen one on a trailer before but never up close, so I couldn't answer his question. Figured someone here would know. Thanks

 

[J Hamilton]

Possibly a model R7 or PR8L. It also looks like the tractor driven PTO was an option. This is what I found in my book 150 years of JI Case. Hope this helps