The 1342 was an odd amp. It was shown in every catalog illustration with an 'inverted chassis,' ostensibly to give more cooling space to the 'non-microphonic' tubes. Yet, I've found a few examples of the 1342 with squared sides. Also, seems to me that as the tubes are 'in the attic,' so to speak, this wide-bottomed design doesn't help with cooling at all. Maybe a bit more stable...
For some reason, they added one more tube, vibrato and some roundier edges to retire this amp as the 1343. Go figure.

Introduced:
Fall/Winter 1950 at $59.95

Retired:
Spring/Summer 1954 at $66.95 as the 1343