Ive just recieved from Bills old bike barn some supposedly origonal pistons which i purchased from him off ebay. Item No 110376225683 They advertised them as being in their origonal boxes and covered in the old grease they used to use to protect them, I recieved them today no origonal boxes and pistons were not covered in the grease like they were described on advert. Inside the pistons is a name BOHNALITE L does this mean anything to anyone, could this be the manufacturer? Also the pistons are marked 317-384 is this the correct number, how can i tell if they are nos or copys?
I enclose a pic of the piston. Any info please as id like to get this sorted out!!!