Value? Best to take a sampling of the records to e-Bay and see if any surface with value. I have seen single 78's go for as much as $1000, with sometimes over 20 bidders. Yes, rare of the rare can get those prices but only if the condition is mint/mint.
Old Vinyl Valuation and Care
My father recently passed away and left me all his albums. They include 78's from the early 50's on the Dial Label. I have a good turntable/VPI cleaning machine but are there any special considerations for cleaning or storing these records, and secondly how can I properly assess their $ value?