Help With A Suffolk!!

Hi there all. I am looking for some guidance please from you learned lot! My dear aunt has a Suffolk lawnmower which is surplus to requirements. It has been unused and in dry storage since it was fully overhauled in 2001. It is in pristine condition, and I wonder could anyone please point me in the right direction in order to sell it for her? The only information I have is 75G14 and Model 28A. It has barely been used, and it would be a shame to sell it simply for parts. Thanks all for any ideas!