Anyone recognise these springs and retainers?

[Puggie]

Came out of my B16 civic head, both inlet and exhaust look the same but I havn't measured spring rates, just at a glance. The retainers feel like titanium (very light and non-magnetic), I'm hoping the shape looks familiar to someone and they are a double spring (both inlet and exhaust). The cams are Buddy Club and Cam gears are Skunk 2 so they would be my first assumptions for a manufacturer (there are a few other skunk 2 bits on the motor and in the history, including previous cams, nothing about springs and retainers though.

So, anyone want to enlighten me to their origin?

 

[rvm]

In my opinion there are skunk2

 

[Craig87]

Where did you buy the head?

 

[Puggie]

It came attached to a second hand civic ;-) I knew it had some work done (std B16a lumps don't do 178bhp on DD rollers) but the history was very sketchy. Some stuff in the history was missing (310cc injectors fitted but no s300 anymore, replaced with an oem ecu and variable fuel pressure regards to 'map' it). I've pulled the head as a couple of stem seals are leaking and it's very coked up (struggling to pass CO for mot too). So I thought I'd give it a spruce up!