Valuation required please. I have a confirmed Hw97 Mk1 Lazaglide s/n 1375789 in standard Mk1 stock, in pretty good condition. I bought it complete with a period Simmons competition 4-12x40 and would like reassurance that i didn't 'overpay'? As you may know it has the 25mm piston and is .177 cal. and shoots very well but i'm told could do with a servive. Any ideas please? Thanks in advance.