Years	Model	Prefix letters	Serial Number Series
McCormick Deering W-9, WR-9, WD-9, WDR-9
1940	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	501 - 577
1941	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	578 - 2992
1942	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	2993 - 3650
1943	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	3651 - 5393
1944	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	5394 - 11458
1945	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	11459 - 17288
1946	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	17289 - 22713
1947	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	22714 - 29206
1948	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	2907 - 36158
1949	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	36159 - 45550
1950	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	45551 - 51738
1951	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	51739 - 59406
1952	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	59407 - 64013
1953	McCormick Deering W-9, WR-9, WD-9, WDR-9	WCB, RCB, WDCB, RDCB	64014 - 67919