So this Higgins got an odd sized post, but I have a base for the seat that could fit into the frame putting the seat at nearly frame hieght, only problem is, it wont come out of its present post, Is there a way to get this out? through the bottom of the tube looks like a ring is securing it, was hoping to see a nut, is this a one-time clamp?
![IMG_0531.jpg](https://proxy.imagearchive.com/dd4/dd41e7a19da495473ecad2ba1ed52e67.jpg)
![IMG_0532.jpg](https://proxy.imagearchive.com/bda/bda12648f0075420a063d0e50dce95b6.jpg)