If you are using an auction to sell, it really doesn't matter what we think; the auction will get you the market price.
In my experience Muratas are slow to sell for what they are 'worth', cause not too many people want or know what they are.
I know this doesn't help much; but 'value' or 'worth' questions just don't have answers; could be $200 to $1000.
03man - Don Voigt
Author of "The Japanese T99 Arisaka Rifle" 2010 edition
Co-author of "The Knee Mortars of Japan 1921-1945" 2011 edition
Near Charlotte, NC