If you want to get it working I service them, drop me a message.
I'm not amazingly familiar with the very early Eclipse cockers, earliest I have is a 97, but from the parts I can see, £2-250 to the UK collector. Pity the frame is cut but that is period correct.
From this era you did not always get an ASA or barrel with the marker, you would more often use a bolt on air system like something very heavy from Air America or a stock and remote air or even C02 still