Quote:
I don't agree. I've bought the majority of my BC stamps in the US, and 95+% of the time you have to use Scott. I actually don't fully trust US dealers who use Gibbons for BC. Gibbons is often used to elevate pricing artificially and VERY few American dealers can correctly identify Commonwealth shades. So it's common to see offers gravitating to the most expensive possible variety.
I did not say the majority of Americans. Nor did I refer to pricing.
Is you want an identification, use SG, that I think was the one used by OP. SG70 is a chrome-yellow stamp. But better still, describe the stamp so users of any catalogue know what you mean. Scott's chrome-yellow may be SG's yellowish orange. In this case, chrome-yellow is what SG calls it.
SG70: Sideways crown over CC, perf. 12 1/2, Britannia issue of 1875, chrome-yellow. It could be SC48. If anyone can confirm that description and the Scott colour (my guess is orange).