Well I have the circlip plies supplied with the very early, original Honda factory tool kit. It says 07914323000 p/N in the K0-K7 Shop Manual..... but I suspect there was an earlier part number.
Those pliers were probably the dogs b*llocks when the bikes were fairly new or on a newish M/cyl but I have had little success removing the circlips from really old and crusty M/cyls with them. The way I get them out it to 'winkle' them out with a thin and angled pick. After all the new repair kit comes with a replacement circlip anyway, so if you distort the old one getting it out with a pick then there isn't a problem.