Nobel 18

[1887jubilee]

I am trying to trace an early coin list. The reference given is 1887 pattern sixpence ex Lobel list 18 GB231 £1,250. This may be a Richard Lobel private list, a Coincraft list or an old Pheonix publication no 18. Help please. A photo of the list would be a help but I expect Coincraft are the only people who might have it.