This may help...
https://groups.yahoo.com/neo/groups/MarxTrain/photos/albums/661235640/lightbox/1970822563?orderBy=ordinal&sortOrder=asc&photoFilter=ALL#zax/1970822563
If it hasn't been altered, the 333 with the molded on sunshade over the cab window is the smoker.
The other engine I don't know how to tell from a picture.
Down the chimney look as noted above, if you have the engine in hand.
"IT's GOOD TO BE THE KING",by Mel Brooks
Charter Member- Tardis Train Crew (TTC) - Detroit3railers- Detroit Historical society Glancy Modular trains- Charter member BTTS
A look down the smokestack should tell you. If not, taking off the shell should confirm it one way or the other.
Larry
How can you tell if a Marx 333 or 1829 has a smoke unit?
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