Collection of mail box cancels of medallons

Quality: ✉

1851 N° 3 "10c. brown", in pair, fully margined with 2 upper corners, on letter with contents, cancelled P.65-La-Louvière, dated 18 March 1851 (black departure stamp), to Tongres Notre Dame with receipt mark "Ath. PO Box H" (Houdeng-Goegnies) in circle black, vf (OBP €450)