Hi Humphrey02,
Looks like I've arrived a little late to your thread.
I notice your lid stay is missing in the photos. Do you know if it with the machine or is it lost?
It might be a fairly hard part to find, but I'm pretty sure you'll find one eventually, but it may have to be found in England. I cant tell from the pictures if the casters are still with the machine either, but if not, those & the lid stay may give you some bargaining chips to get the machine at a lower price.
The Mahogany Library Grand is part of a special range of machines that were made in England, for sale here in Australia & in New Zealand. These included Excello & Austral (hornless models), the Zealand & Tasman (table models), & the Bungalow, Mahogany Library Grand & Studio Grand (upright models).
There was also a console model which I came across about 25 yrs ago, but at the time I didn't think it was anything special so I didn't take note of the name.
Some of these models were exactly the same, or very similar to models sold in England, while others like the Bungalow & Studio Grand were unique to this line & never marketed in UK.
The brass "gramophone" name tags used on these machines where never used on HMV's sold in England either, but I have seen a similar "Zonophone" tag used on a cheaper line of Zonophone machines made by the Gramophone Co & sold here.
The MLG uses the same cabinet & basic specifications as Model 11 pictured below, but slight variations in metalware & running gear were used on our machines.
Apart from my own MLG, yours is only the second I've come across, & is the first No.2. I cant image these are in any way rare, but they are certainly far less common than either the Bungalow or Studio Grand uprights, if Ebay is anything to go by.
Bungalows seem to sell for between $400-$600, and Studios often sell in the $600-$800 range, so I dont think $525 is too far off the mark, even without the lid stay.