I'm thinking it is what you might have expected, SG 210. It's not SG colour guide orange-red, but recall that SG notes that traditional color names have been kept, so that might apply here. There is also a range of colors (not only just shades) for earlier 187, called vermilion-red only by SG but not always something like that. There are shades not listed by SG in this era going back to 1879, so I would expect shades to be present here also.
https://queensland2sideface.blogspo...el/1%20pennyscans from various sources, so unreliable that way but does show the color range possible in my opinion.