2A1746C is not a valid coordinate or range

You are correct. "2A:1746C" is not a valid coordinate or range. In coordinate notation, a valid coordinate typically consists of a combination of letters and numbers representing a specific location on a grid or map. For example, a valid coordinate could be "A4" or "D12". A valid range would consist of two coordinates representing a specific area on a grid or map. However, "2A:1746C" does not follow this format and is therefore not a valid coordinate or range.