Do-It-Yourself, Repairs and Fixes

I recently stumbled upon a fantastic swivelling recliner chair on trash day in Amsterdam, but there's one small catch – it's missing its base! The chair itself is in great condition, and I couldn't resist the opportunity to bring it back to life. However, I'm facing a bit of a dilemma when it comes to finding the right chair base to restore this gem to its former glory.

What I want to achieve:

1. The chair is a swivelling recliner, so I need a base that allows it to swivel.
2. I don't have any information about the chair's brand or model.
3. I'm open to both purchasing a replacement base if I can find the right one, or attempting a DIY solution if that's feasible.
4. I am located in the Netherlands, so I would prefer to get something local but am happy to order online.

I've tried searching online, but without knowing the specific chair's make and model, it's been challenging to identify the exact base I need. So, I'm turning to this wonderful DIY community for your expertise. Here are a few questions I have:

1. What strategies or resources can I use to identify the chair's make and model based on any existing markings or features?
2. If I can't find a matching base, how challenging would it be to fabricate a custom base that accommodates both swiveling and reclining functions?
3. Are there any common standards or measurements for chair bases that I should be aware of when searching for a replacement?
4. Any other tips, tricks, or advice on how to go about this project would be greatly appreciated!

Please let me know if I should add any pictures to the album HERE.

Thanks, everyone who takes the time to read this and respond ^ _ ^