拍品的狀況可能存在極大差異，而由於其性質使然，拍品難以處於完美無瑕的狀態。拍品均以拍賣時的狀況出售。

In very good overall condition with wear and use consistent with age and didactic use, they have been professionally restored. Much of the applied paper horizon rings, and some hour rings and quadrant arcs in facsimile, some old repairs to Copernican armillary's rings. The terrestrial globe with repaired dent. The wooden stands have some signs of age, some old worming to one, but elements may be later since many of the quadrant arcs are.

The condition of lots sold can vary widely due to factors such as age, previous damage, restoration, repair, and wear and tear. The nature of the lots sold means that they will rarely be in perfect condition. Lots are sold in the condition they are in at the time of sale.