There appears to have been four different Roller cancellations for London although only the first two show up in the Proof Books

Type 1

Proof entry circa July 1856

Proof entry circa December 1857

Characteristics: Continuous lines surrounding ‘75’  in diamond for the London Inland Office

Proofed: circa July 1856 and then a further entry (recut) circa December 1857

EKD: ??? As far as I am aware no dated (or indeed undated) example has been recorded

LKD: ???

Scarcity Rating: GPO (Proof Book Entry Only)

Picture Gallery: n/a

Type 2

Proof entry circa July 1856

Proof entry circa December 1857

Characteristics: Continuous lines surrounding ‘76’  in diamond for the London Inland Office

Proofed: circa July 1856 and then a further entry (recut) circa December 1857

EKD: A cover has been seen which it is stated to be dated 10th June 1857

LKD: ???

Scarcity Rating: H. Very Rare

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Type 3

Characteristics: Previous studies had shown this to be a 3-7-3 bar series. However, looking at the known examples and having seen the actual Roller machine (courtesy of BPMA) it is a definite 3-5-3 bar system as per Type 4 below

Proofed: Not found in any of the Proof Books

EKD: ??? There are no dated copies recorded

LKD: ??? However, it has been seen on stamps that were introduced from May 1857 to March 1868

Scarcity Rating: H* (Recorded on Stamp Only)

Picture Gallery

Type 4

Characteristics: No: 2 in a square surrounded by 3-5-3 horizontal lines. It is assumed that this (and Type 3) are Roller cancellations although it is difficult to prove either way.

Proofed: Not found in any of the Proof Books

EKD: 4th February 1858 (only one dated copy has been seen)

LKD: 4th February 1858

Scarcity Rating: H (Very Few Recorded)

Picture Gallery