Need help with identifying a Stihl chainsaw

[Crash1387]

My first time on here and I need a little help with a chainsaw that was my grandfathers. It a stihl for sure but I can’t make sense of what model it is, I have the numbers off the clutch cover. Note that it doesn’t have bucking spikes or my grandpa took it off. The number on the clutch cover is 147356402.

 

[Woodslasher]

I’d say it’s a late-model 066.

 

[Crash1387]

I’d say it’s a late-model 066.

Thank you, I wasn’t quite sure what it was but thank you for taking time to respond.