Help me ID this seat? and/or Free seat!

[StrayNut]

It was thrown in free with my 81 Honda CM400, with the thought that it might let me sit a little lower. Don't need it anymore... if you can use it or sell it, come pick it up! (Watertown/Belmont/Waltham MA) Otherwise, if I know what kind of bike it goes to, that might make it easier to unload on CL...

[dontpanic]

Some of those components (the hinge, the little plastic trap door, the chrome trim, the rubber bumpers) remind me of the RD400 I owned for a while (thanks, Ken C.!). I'll bet it's from an early-70s Yamaha.

[zimquidl]

If it helps, these are pictures from my 1975 Honda CB550 seat:





Pretty much the same, except for the front underside where my seat has three raised ridges, while yours has two.

[boosten lebaron]

looks like an rd350 seat.

[Sheppo]

It's NOT an RD 350 seat!

[StrayNut]

Thank you, guys!

If it helps, these are pictures from my 1975 Honda CB550 seat:
Pretty much the same, except for the front underside where my seat has three raised ridges, while yours has two.

Haha nice, same camera angles and all. Very helpful, thanks! Looks pretty certain to be in the 70's CB family.