Kover Watch Exhibited in 1913 - reference

I decided to do a little more research on the Dennison Watch Collection. I managed to find a copy of:

"Historic horology: being a catalogue of a collection of antique watches belonging to the Franklin Dennison collection and exhibited by the Dennison Watch Case Company at the jewellers' exhibition, 1913."
Dennison, Franklin.
Publisher: [London, 1913?]
Description: 68 p. 17 cm.
Notes: 1 plate. 

at the National Art Gallery, Victoria & Albert Museum, London. I telephoned the enquiry desk who said they would retrieve a copy of the 1931 catalogue and the following related document:

"Important collection of English & continental watches formed by Franklin Dennison. 1961 Oct. 10."
Christie's London.
Publisher: London
Sale Date: 10th October 1961
Description: ill.
Notes: Place of sale: London. Dennison watch collection.

The 1913 catalogue at the National Art Gallery includes the Supplement [London, 1914] bound into the back of it.

The 1913 catalogue includes one reference to a Kover watch as follows:

Lot No. 38:
Verge; in Repoussé Pinchbeck Case; Gold Dial. Kover, London, 1700.

Unfortunately no watch number. The other two documents do not contain any references to Kover.

Thanks to Elizabeth and Vicky at the V&A National Art Library for their excellent service.

I discovered the whereabouts of the documents on WorldCat

Note to self: Franklin Dennison looks an interesting character. Must do a little more digging about him.