Casting pattern for sidelight (porthole) covers of Olympic/Titanic.  Looks like a heavy metal porthole cover.

Casting pattern for sidelight (porthole) covers of Olympic/Titanic | National Museums Liverpool

title

Casting pattern for sidelight (porthole) covers of Olympic/Titanic. Looks like a heavy metal porthole cover.

description

https://www.liverpoolmuseums.org.uk/artifact/casting-pattern-sidelight-porthole-covers-of-olympictitanic

Casting pattern for sidelight (porthole) covers of Olympic/Titanic

https://content.liverpoolmuseums.org.uk/artifact/casting-pattern-sidelight-porthole-covers-of-olympictitanic