thirty

did they make a newer style thirty I found one that has thirty on it but it looks more like a r2 I have never seen a thirty that looks like this did they make very many of them? thanks mat

Yes they did, here is one sitting at the San Joaquin Historical Park, Lodi Ca. (a must see BTW)

That would be the new thirty that was rebadged as the R4

that looks like it but it has a b erie blade on it. it has sat for about five years but should run. have rare is it?
thanks mat

This tractor is the "6G" series Thirty, it was first built in 1935 and was officially renamed the R4 in 1938. The serial numbers for this tractor started at 6G1 and the last known production Thirty was 6G788, however the exact number of 6G Thirty tractors is unknown according to my Caterpillar serial number guide. The R4 tractors carried the same serial number designation and the first officially recognized R4 tractor was 6G930, so somewhere between #6G789 and #6G929 was where Thirty production stopped.

catten, Yes they did make a newer version of the THRITY from 1935 to 1938. They made 930 of the 6G THRITY machines. They continued making the same machine renamed the R4 from 1939 to 1944. They were all made in 44" and 60" gauge. Both the THRITY and R4 carried a 6G serial #.