Green’s Dictionary of Slang

super n.2

also soup, souper, supper
[? SE soup-plate; i.e. the size and shape of a watch]
[mid-19C+] (UK Und.)

1. a watch.

2. the ring that secures a watch-chain to one’s garment.

In compounds

s(o)uper and slang (n.) (also slang and super)

a watch and chain, soaper and slang.

super chovey (n.) [chovey n.]

[mid-19C] (UK Und.) a silversmith.