Help identify this Campy cassette please

[Anonymous]

Hi! I found this on Mavic Comete disc, first sprocket is broken. My question is this a cassette with replaceable 1st cog that tightens the whole thing on like early shimano? I couldn't find any info, all Campy 8spd seem to have standard lockrings. Thank You all

 

[latman]

looks like sachs freewheel cogs with a campag one on last to me

 

[agentorange]

looks like sachs freewheel cogs with a campag one on last to me

Sounds about right, looks like someone has used the threaded last two alloy sprockets from a Campagnolo 6/7 speed freewheel (nice item) on a lesser steel 8-speed freewheel. You can just make out the difference in quality. Which, actually, isn't a bad way of upgrading to 8-speed but retain the 'Campagnolo' theme.