Royal
				Royal-Typewriter Co. Inc., New York, U.S.A.
Models and s/n	Y	M	D	Remarks	Ref.
Standard Manual
Nos. 1, 2, 3, 4, 5, 6, 7, 8 and No. 10 Models HM, K, KHM, KMN and Q				Electric serial numbers first run concurrent with Standard, then see under Electric
up to 1000	1905			Nos. 2, 3 and 4 had only larger carriages, than No. 1	9,4
4000	1906				9
14000	1907				9
38000	1908				9
58000	1910				9
85000	1911			Model No. 5 started, Nos. 6, 7, 8 had only larger carriages, than No. 5	9
142000	1912				9
175000	1913				9
205000	1914			Model No. 10 started, Double Glass Panels began at 212000	9
234000	1915				9
279000	1916				9
336000	1917			Variable Line Spacer began at 282000	9
394000	1918				9
478000	1919				9
567000	1920				9
614000	1921			Master Model and Quiet Model, both in 5 different carriage sizes	9
682000	1922				9
766000	1923			Single Glass Panels began at about 755000	9
848000	1924			Prefix "Y" 100000 up: treat as 750001 to 1000000	9
940000	1925				9
1036000	1926				9
1134000	1927				9
1236000	1928			New Style Drop Segment began as under 18" and wider 1200000	9
1348000	1929			New Style Drop Segment began as under 14" 1330000	9
1435000	1930			Model SX started	9
1525000	1931			New Style Drop Segment began as under 10" 1470000	9,15
1554000	1932			Prefix "SY" and "CSY" 100000 up: treat as 1470001 to 1550000	9,15
1617000	1933				9,15
1723000	1934			Model H10 started	9,15
1847000	1935			Prefix "HY": treat as 1670000	9,15
2005000	1936				9,15
2178000	1937			Prefix "KHY": treat as 1890000	9,15
2320000	1938				9,15
2494000	1939				9,15
2681000	1940				9,15
2901000	1941				9,15
3026000	1943			World War II	9,15
3037000	1944				9,15
3094000	1945				9,15
3273000	1946			Model KMM Magic Rand and Touch Control started	9,15
3550000	1947				9,15
3865000	1948				9,15
4110000	1949			Model KMG started	9,15
4360000	1950				9,15
4688000	1951				9,15
4990000	1952				9,15
5248000	1953				9,15
5503000	1954				15
5787000	1955				15
6088000	1956			Electric RE Model	15
6415000	1957				15
6650000	1958				15
6950000	1959				15
Model HH
5100000	1954				6
5456674	1955				6
5728700 to 5989001	1956				6
					6
Model F.P.
6159809	1957				6
6361664	1958				6
6605188	1959				6
6867976	1960				6
7069762	1961				6
7292351 to 7470959	1962				6
Model 101
7471771	1963				6
7628767	1964				6
7902159 to 7933672	1965				6
M.C. Empress
7942375	1965				6
8216377 to 8289999	1966				6
440
8390000 to 8550000	1966-1968				6
Electric
HE Model
7003601	1960				6
7580644	1963				6
G.A. Model
7663992	1963				6
7820050	1964				6
8026200	1965				6
8215835 to 8529725	1966				6
E.B. Model
7672525	1963				6
7739084	1964				6
8003200 to 8322305	1965				6
Portables
Royal-Portable Models S, J, U, UB, D, DE, DJ, DD
1000-31000	1932-1934				13
34000-50000	1935-1936				13
52000-82000	1937-1938				13
85000-156000	1939-1940				13
165000-239000	1941-1942				13
Royal-Portable Models RC, RA, RF
1150000-1160000	1945-1946				13
1160000-1266000	1946-1947				13
1275000-1453000	1947-1948				13
1470000-1740000	1948-1949				13
1741000-1941000	1949-1950				13
1941000-2137000	1950-1951				13
2137000-2353000	1951-1952				13
2353000-2564000	1952-1953				13
2564000-2788000	1953-1954				13
Portable Standard,Arrow, Speed King, Aristocrat, Quiet DeLuxe				Prefixes O and OT stand for Standard, C for Arrow, B for Speed King and Aristocrat, A for Quiet DeLuxe
up to 6000	1927				9
56000	1928				9
114000	1929				9
250000	1930				15
305000	1931				15
325000	1932				15
354000	1933				15
409000	1934				15
493000	1935			Model "A", chrome-nickel, long row switch-lever starts with s/n 471000	15,6,7
603000	1936				15
724000	1937				15
807000	1938				15
927000	1939				15
996000	1940				15
1107000	1941				15
1152000	1942				15
World War II					15
1164000	1945				15
1275000	1946				15
1474000	1947				15
1741000	1948				15
1940000	1949				15
2137000	1950				15
2353000	1951				15
2563000	1952				15
2787735	1953				15
2977900	1954				15
3178000	1955				15
3449000	1956				15
3771000	1957				15
Signet and Signet Senior Incomplete Portable
	1932-1933			No Prefix	6
Junior Incomplete Portable
to 45000	1935-1936			Prefix U	6
45001	1936				6
62001 and over	1937				6
Universal Incomplete Portable				Prefixes U and UB
71000	1937				6
80001 and over	1938				6
Varsity Incomplete Portable				Prefix D
to 100000	1939				6
114526 to 120935	1940				6
Companion Incomplete Portable				Prefix CD
Mercury Incomplete Portable				Prefix E
Royalite and Royaluxe 400, 425 and 450
35638	1955				6
3123513	1956				6
3384902	1957				6
3745091	1958				6
3970557	1959				6
4272034	1960				6
4544659	1961				6
4927715	1962				6
5292116 to 5733104	1963				6
57438 11 to 609523 8	1964				6
6098916	1965				6
6580453 to 6948198	1966				6
Royaluxe 300 and 325
104311	1959				6
107687 to 122040	1960				6
Diana Portable
13365	1953				6
22020	1954				6
32144	1955				6
37141	1956				6
43336	1957				6
64701	1958				6
81475 and over	1959				6
Safari
5584967	1964				6
5958589	1965				6
6474796 to 7022435	1966				6