Here is how I determine something like this, so this process may help you in the future.
Jules Borel has a very good parts interchange, but if you can find parts lists for the various movements, the same thought process can be used as I show here.
Look here:
http://cgi.julesborel.com/cgi-bin/matcgi2?ref=LON_345
"ALL OTHER PARTS USE LON 343"
So anything not listed there is not specific to the 345.
http://cgi.julesborel.com/cgi-bin/matcgi2?ref=LON_343
"BM 340"
This means the base movement is the Cal. 340. So again, anything not lited there is not specific to the 343, or the 345.
http://cgi.julesborel.com/cgi-bin/matcgi2?ref=LON_340
1535/1 is listed there...so yes, the reversing wheel from the 340 will work.
Cheers, Al
