Screw-in chokes for a Wingmaster barrel

25yrs ago?
How about Briley?

No brand name on your choke tubes?

Could be several different makers from Briley, Trulock, Carlson's, or similar.

What are you asking exactly? What thread pattern the chokes are? What options for choke tubes are all out there?

Are you asking so your brother can get more chokes for the gun? Does someone else want to thread their shotgun for chokes?

For the best pricing and turnaround Mike Orlen is THE guy for choke tubes. Excellent work.

Does Mike thread for and use Carlson's or Trulock? I have a few of George Trulock chokes - great product and great folks to deal with

I use Trulock in my Wingmaster.

I have had Mike Orlen install Colonial tubes in4 different Remington barrels. All work great. He and Briley are the only two I will personally vouch for. Others may be as good, but I have no personal experience. As I said, mike is MUCH less expensive, but he does not have the tooling capability Briley has. I had them do two SXSs. Not cheap, but perfectly done.

I had one shortened back in the day and used Colonial.

Colonial Choke and Tool, LLC

I have Colonial Thin Wall Sporting Clays https://www.gunbroker.com/item/893971853 in a couple of guns, installed by Mike Orlen. He knows his stuff, has a high reputation in the industry, and says that Colonial and Truelock are the highest quality. I have some regular stainless ones and some of the TiNi coated ones. My experience with the install and the chokes has been great.

IMO, the quality and precision of the installation will be MUCH more important than who (among the proven brands) manufactured the choke tube.