report for contributions received through a web transaction via a ticket order

Hi there,

I am trying to find a report or create a list of contributions that come through the web and have a Web MOS.  

List manager with that criteria will give me constituents that have given to the chosen campaign with contributions with that MOS and ticket purchases with the MOS.  Not necessarily only contributions with that MOS.

We do not use channels.  Contributions through Web are processed through a ticket batch (even if a ticket is not purchased) with MOS Web.  Contributions below a specified dollar amount are auto processed and do not go through a gift processor

We are not on TNEW.

Based on this, Is there a way to find only those constituents who have only given with the MOS web.

Thanks for your help.