They changed the clusters and re-designated the master post so thats probablys why there is a whole in the vent stack where the dome should be.
I think you may be right in saying this was used as a prototype post
They changed the clusters and re-designated the master post so thats probablys why there is a whole in the vent stack where the dome should be.
I think you may be right in saying this was used as a prototype post