Condition grading systems are subjective and to some extent, vary between the types of maps graded. For example, a wall map or separately issued working sea chart will rarely appear in gorgeous condition, whereas a lot of maps that appeared in atlases frequently appear on the market in gorgeous condition and defects stick out like sore thumbs. Accordingly, our grading system to some extent is a sliding standard that adjusts depending upon the type of map and our expectations about what a collector can hope to acquire.
We grade the condition of maps as follows:
- Excellent
- Very Good
- Good
- Fair
- Poor
Excellent suggests that the item is in near perfect condition, with only the most minor imperfections considering its age or its condition when originally made. Minor imperfections may include a centre-fold as issued or expected modifications to join two halves of a map together.
Very Good means that the map has only the most minor defects. Minor defects may include very light soiling to margins, light toning to the original paper, very minor marks consistent with age, but otherwise a very presentable example.
Good means that the map has minor defects. These may range from minor soiling and foxing, minor marks, or minor to tears not significantly affecting the image.
Poor means that there is significant damage, tears or marks affecting the image. Poor items will very rarely be offered for sale, and typically only for particularly rare or old items that have intrinsic value despite the condition.