I don't believe the 40-54 horn buttons will be at all similar to the 34 if a posted photo of a 37 button is any indication. The 37 seems to have different pieces from those you are showing too so it many not be any closer but here is the link to the 37 photos if you want to check them out.https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=228203&keywords=37+horn+button