In 1936, a solicitor in Hull discovered three bisected 1840 Two Pence Blue stamps in his office correspondence. He tore them off the letters and they were later sold at auction in February 1937, the pieces bore Hull or Lincoln postmarks.
A few years later, a solicitor in Beverley turned out some old papers and threw into the bin some old stamps on letters. A friend called round later the same day and reminded him that another solicitor had found some old stamps cut in half a few years earlier, so the letters were retrieved and one example was found, then a search among old files produced another.
Both entires were postmarked at Hull, the first on March 27 1841.
Proof on thin hard yellowish white paper in ultramarine
Proof
Ormond Hill Die proof
Distinctive Cancels
Aberdeen
Ashton-under-Lyne
One central point crosses at it's end
Belfast
Brighton
Channel Islands
Cork
Coventry
Dublin I
Dublin II
Greenock
Almost straight sides, a large centre with prolonged points
Hollymount
Only the outer frame (the rest broke away)
Kelso
Straight sides and small centre
Kilmarnock
Dot in the centre
Leamington
Central points greatly elongated
Leeds
Very rounded loops
Limerick
Manchester
Center points resemble fish tails
Melksham
Three dots in the design
Montrose
Mullinger
Notches cut into each side of the outer frame of the cross
North Allerton
One point of the centre noticeably elongated
Norwich
Oxford
Solid centre
Perth
Central points are elongated and central cross is not symmetrical
Plymouth
SCOTTISH
Small diamond
SCOTTISH
Large diamond
Stonehaven
Only in brownish orange
Tadcaster
Tallow
Welshpool
Solid centre
Wincanton
Wotton-Under-Edge
File marks cut across
York
Number in Centre
Numbers 1 through 12
Cancel colours
Black
Red
Red MX Ink Composition 1lb Printers red Ink 1 pint of linseed oil ½ pint droppings of sweet oil Red MX ink was easily removed, it was discontinued Feb. 1841