Body serial number: 7-2663226
Carriage serial number: 8-2710434
Custom Basic Writing No. 67 typeface; 6 CPI (4.2 m/m), 3 lines/inch
Body cover in Saturn White with Slate Gray bottom shell.
Basic Writing No. 67 Typeface
None of the Olympia typeface catalogs I’ve ever seen include this particular typeface. The closest I’ve seen to a match for it is the Basic Writing No. 67 (6 CPI) which was available as a custom order for Smith-Corona machines in the 60s onward. The 1964 NOMDA Blue Book includes it as does the Smith-Corona Typestyles catalog from 1968. Slug/foundry marks I’ve seen for the Smith-Coronas have a “29” on them while mine reads “2985”. I’m suspecting the 29s have something in common via the foundry while the 85 might be indicative of the length of the rule on the carriage.
In comparing exemplars, I’m reasonably certain that they’re identical due to the nature of the distinctive numbers 4, 9, the letter t and the sharply angled connectors on the u and the n.
While it was surely a custom order, Olympia apparently did it often enough that they bothered to have Perspex carriage rules custom made for the size. The rule on the back of this one has a “42” in the left rear corner which was surely an internal indicator for a 4.2m/m typeface. (4.2 m/m = 25.4 mm/inch x 1 inch/6 characters). It’s common on most Olympias for their rules to be either stamped or marked with the rule size like this most likely to ensure the correct rules were put onto the appropriate typewriters during manufacturing and assembly.
This particular machine has a very wide 15 inch platen and the rule only measures up to 85 characters! For type this large, you’re sure to want wider paper to actually fit something on it. As a comparison, my 1977 Olympia SG-3 with a shorter 13″ platen has a rule that measures up to 145 characters. That machine is also marked with a 21 in the left corner to indicate that it’s 2.1 m/m or 12 pitch (elite) machine.
Because of the large format typeface, this machine does not accommodate bichrome ribbon like most SG-3s. As a result, the ribbon color selector on the left side of the keyboard which would typically be labeled blue, white, red (from top to bottom) is labeled white, white, blue. I’ve spooled it up with a new monochrome black ribbon on universal spools. Though it’s from the early 70s when it was more common, this machine also has a 1/! key to better differentiate the numeral 1 and the lower case letter L.

To show just how large this typeface really is, I’m including a sample of it along side of the standard Royal pica and elite typefaces.
Condition
The typewriter itself is in reasonable condition for its age. Someone has obviously left it in a somewhat humid environment where it was neglected for a few decades. The spacious area underneath the carriage had the cobwebs and skeletons of at least four nice sized spiders. Some of the metal pieces inside have some surface rust that will need to be mitigated. I’ve wiped off the exterior shell and given the interior a preliminary blow out with the air compressor. I’ve oiled the carriage rails lightly, and I’ve put a new ribbon into it and the alignment seems reasonable, though I’m sure to make an adjustment or two when I get to giving it a full clean, oil, and adjust. The carriage has something slightly out of alignment as it binds at about the midpoint, but I’m sure I’ll find it when I’ve stripped it down for a full clean.
In the meanwhile, it’s in good enough condition for general use.