If you want to add a reasonably period correct fuse assembly block look for one of these (regular item on eBay). Just make sure you get one that uses glass fuses instead of the bakelight type which are fairly rare.
https://www.flickr.com/photos/advance-design_parts_co/16755164762/
https://www.flickr.com/photos/advance-design_parts_co/16568663038/
Here is a picture of the type using the harder to source bakelite holders.
https://www.flickr.com/photos/advance-design_parts_co/8129437778/in/set-72157631868452754