Button, Greenwich Hospital Service?

Two buttons. Rope twist border. Within a raised circular border on a lined background are two crossed Union Jacks over a naval crown which is over an anchor. On the left-hand side of the anchor is a G. On the right-hand side of the anchor is a H. Below the anchor is an S.

Object Details

ID: UNI6151
Collection: Uniforms
Type: Button
Display location: Not on display
Creator: J. R. Gaunt & Son Limited
Date made: Unknown
Credit: National Maritime Museum, Greenwich, London
Measurements: Diameter: 23 mm