This is one of two Pentax models commonly found that has Mirror Lock Up, the other is the LX.
A used LX body is pricey, this one isn't!
The camera works well with the exception of the meter which for the last few years was intermittent. The likely cause is the meter switch and is likely repairable for a reasonable sum. HOWEVER you don't need a meter for astro photography but you surely would want the Lock Up function, making this a good choice if you like Pentax gear.
There is a little brassing around the corners, from many many years of use. I have owned this camera almost since it was new and have never dropped it or gotten dust and dirt into it during my many adventures doing landscape photography. The top of the pentaprism housing has a slight depressed area, but the finish is not broken and you have to look to see it, it was this way when I purchased it.
I am including a nearly new Pentax T adapter, the original (NOT a copy) manual, front body cap and a nice cable release. Just add a telescope!
$150 shipped in the CONUS, add $5 for Priority Mail
I accept Paypal (add 3% for Credit Card), USPS MO, and US Treasury Money Orders.