Russian pianist Mischa Levitzki inspecting the making of a vinyl record at the H.M.V. factory, Sydney, 19 May 1931, 2 1931, nla.obj-162117414
You could try contacting either a record collector or auctioneer, who are experts in this field. One way to do this is to search the yellow pages in your area. Yellow pages can also be searched online. Audio Recycle are located in Melbourne and have information about vinyl records and their worth.
If you wish to offer your record for sale you may also like to contact the National Film and Sound Archive. However, please note, the National Film and Sound Archive does not offer a valuation service.
There are print items available, which can help you to price your record. To locate library holdings of these search Trove. Try the search terms “sound recordings prices” and/or “sound recordings collectors and collecting”.