Russell Grader - year of Manufacture?

Hi all, I went through the arcives and as close as I can figure the grader I am looking at I believe to be late teens to early twenties. The serial number is S 5017. I didn't get the wheel base measurements but they seem to match the Mogul specs with open gear boxes. It has flanged wheels, which I gather was not standard but an available option. This unit also has the factory steerable tongue. The only thing missing on it are 2 hub caps. I was just curious if anybody had a serial number list or possibly a unit with a close enough number to determine the year built. Thanks, Garry

Snuffy
[SIZE=2]1937 22, 1939 D7 9G, 1950 D4 7U, 1953 D4 7U,1953 D2 5U, 1962 D7E[/SIZE]

maybe this will help: http://www.chriscomachinery.com/PullGraders.htm
Std Blade Grader S-1001 to S-4950 1912-1925
Reverse Blade Grader S-501 to S-1000 1908-1912

According to your list, I either mistook a 3 for a 5, or is it possible that Cat sold some machines under the Russel brand the first year after takeover. I will take some soapstone and double check the serial number.

Snuffy
[SIZE=2]1937 22, 1939 D7 9G, 1950 D4 7U, 1953 D4 7U,1953 D2 5U, 1962 D7E[/SIZE]

I do know that Cat purchased Russell in 1928 and i have seen graders with both the russell tag and caterpillar tag.

Thanks again Erik, I need to double check the serial number, because if I did read it correctly then I have a Cat #3. I will let you know. It was a bit of a walk to where it was parked and I was to busy BSing and forgot to take my camera. When I go back I will get some pics and post them. Garry

Snuffy
[SIZE=2]1937 22, 1939 D7 9G, 1950 D4 7U, 1953 D4 7U,1953 D2 5U, 1962 D7E[/SIZE]