Here is where we go to do the research when people ask what a coin is worth and if it is rare: https://www.acsearch.info/ https://www.cngcoins.com/Coins_sold.aspx https://www.vcoins.com/en/Default.aspx
Probly Not rare. This was a Social War issue and the Roman Republic made bunches to finance the Legions. ACSearch shows over 2,000 listings.
http://www.forumancientcoins.com/dougsmith/acmfrugi.html You may find interest in my old page on these. There are many varieties from the father and son who used the type.