Doorbell chime compatibility

I am trying to determine whether my existing hardwired mechanical doorbell chime is compatible.  I found a helpful list of compatible chimes on a Ring website, but my issue is that I can’t identify the manufacturer or model of my chime.  There are no labels, stickers, or engraved text with this information.  There is only a wiring diagram and cleaning instructions. I’ve looked all around.  Here is a picture.  Does anyone have suggestions?