Where can I find information on antique "Invincible" brand golf clubs?

Question

I recently started using my father's old clubs and one of them was an "Invincible" 1a Iron with a wooden shaft. I can't seem to find anything on the brand or when they were made. Can you help?

Nice try, Doug. They've never heard of them either.

Answer 1

try these people they have an Invincible ! wood for sale maybe they know the rest of the brand

http://www.bogeydust.net/catalog/index.php?manufacturers_id=111

Answer 2

Here is a place that might help
http://valueguide.pga.com/index.php