Postal Stationery items

Quality: PWST

Stibbe nr 57, accumulation of 7 items all with surcharge "30", 5x with inverted "30" and another inverted "30" at the top and 2x with inverted "30" and another "30" at top, all cancelled CTO "BOMA 27 AOUT 1922", interesting for study of different types of surcharge, quality to be checked, vf/f/to be checked