The G33 were Pennsy's second iteration of 65'-6" 70-ton gondolas, the first being the G26. They were welded steel cars with steel floors. There were no apparent differences between the G33 and G33B.

 

Types of trucks used

ClassCarNumbersTruck ClassTruck NameQty cars:
G33 441500 441999 2E-F25 National malleable C-1 Type 500
Truck data is from PRR documents circa 1940's. Other truck classes may also have been used.
From prr.railfan.net.

Cars on the PRR roster (as listed in the Official Railway Equipment Register (ORER)):

ClassCarNumberAAR ClassPRR Oct 44PRR Oct 48PRR Apr 52PRR Oct 53PRR Oct 58PRR Oct 63PRR Apr 68
G33 441500 441999 GB - - 500 500 500 500 498
G33a 442000 442149 GB - - 250 250 250 250 248
G33b 442250 442449 GB - - NEW NEW 200 200 199
Roster data compiled by Rich Orr. From prr.railfan.net.

The G33

Beginning May 1949, 500 G33 were built with drop ends.

No scale models have been produced to date.

The G33A

Beginning August 1951, 250 G33A were built with fixed ends.

No scale models have been produced to date.

The G33B

Beginning November 1953, 200 G33B were built with drop ends.

No scale models have been produced to date.