I have a C&H 48" Advantage Pro mat cutter with production stops that is in mint condition.
The Advantage Pro has the wider measuring base.
Because it is So clean, it was actually used at the WCAF show in Las Vegas for testing CPF framers a few years ago by my boss who is on the PPFA competition and testing committees.
I am in Phoenix, Arizona, but I can ship it to you if we can agree on a price.
We have a Wizard 9000 mat cutter at work so I just have this one at home.
I can post pictures if you like.