I sold a beautiful HW77K Mk 1 fitted in a 97K stock with a V-Mach Mk 1 kit for about 150 notes and I WAS A DAMN FOOL! If it is a nice mid 80s gun I would keep it if I was you.
Your one looks really beautiful, and also you have mis-described the scope, which is why people are not biting! It looks like a 8-32x50 or 8-32x40 so really you need to re-advertise it.
This should be the ad ...
Beautiful classic HW77K in .22 calibre with humungous scope and rock-solid 1-piece mount. Only 200 and somthink qidlings.