We have a local 'Forge. Imagine most placed have their own local wrought iron shops that make custom fences, burglar bars, anything you want. Local guy stocks tons of fancy curly things and just about anything imaginable for making those square bars have a style. If they dont have it they can order tons of fancy stuff or just make a template or mold and make it them selfs. Local guy sends every thing once completed to the hot dip tank. Galvanize then a prep process for primer and paint after. Might do powder coating. Havent been through their shop in years. Young upstart company here, started during the 50's, but they seem to be old fashioned quality.

The site below may give you some ideas. The following two links show brackets (from the site) that may work but the diameter of your tubing will be a factor. I think you'll need to drill at least two holes in the sign in order to mount the brackets, then paint the bolt heads to match the sign. Other option, consider drilling all the way thru the tubing and use Tamper Resistant bolts and nuts to secure the sign. http://www.hooksandlattice.com/street-brackets.html http://www.hooksandlattice.com/sign-brackets-for-poles.html Here is a link that might be useful: Brackets

David, Thanks so much for your kind words. Bruce, Here is a picture of the Handrail going up the steps on the side porch incorporated into a small run of Wrought iron fencing. It will be s shorter wrought iron Fence 36" above with all structural member sets in a concrete curbs that are used to house or create the bed for the herringbone pavers. The hand rail/wrought iron fence is on either side of the steps and was just put in today. Too late to prime.s The paver are not relaid yet but are all original and fired on site in the 1800's. In this picture you will see the stone retaining wall in front of the bay window and in front of the big spruce are now complete. The side walk is to the right of the corner post and to the right of the curb. Outside architectural lighting just installed today.

So let me point out the obvious, that's not a brick wall/fence. That's a stacked tumbled paver wall that doesn't have mortar between the courses. It may or may not have an epoxy binder between the blocks. I'm almost certain it's not a veneer over structural concrete block. That's why it's limited in its height. Unlike your examples, it doesn't have vertical "posts" that go all the way up and would provide the needed structural support for the wood fence portion. Those "posts" in your examples are made from structural concrete block with a brick veneer and will provide resistance to perpendicular horizontal forces such as wind, or a climbing kid. That's not at all what you have. The only thing worse than a kid on the loose is a block structure that falls over on a kid as they scale it. A fenced in back yard for kids/pets isn't a bad thing. It can be chain link or wood privacy fence. Yes, jokes about shock collars, leashes and such aside, it's also time to parent.