I am pretty sure it is indeed ord related fuze system, but what, I cannot tell. It is awesome and your pics are fantastic. I am sure someone will ID it here for you. The display and the way it is mounded is really well done. Great find!
The quality of the cutaway workmanship and the nice little stand I’m pretty convinced that it is a factory cutaway. It has been very well done. After looking around at various missile fuzes I’m pretty sure that it is one of those but just want to make 100% sure before I display it with the rest of my fuzes/cutaways.