It will all depend what age of case you have. Vintage oak and Leather cases use simple replaceable parts that usually be sourced on eBay, Straps are Vege tanned Bridal leather available in various widths and lengths as well as leather to make the guides, the strap Brass Buckles are of the Military roller pattern. I have also found that there is usually a choice of second user leather case handles though to purchase a vintage Styal new leather handle can be rather expensive. Handle D rings are always available in many sizes also in either Brass or steel.

Some time in the past I did a complete post on how to restore this case.

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To this

[Linked Image from i.imgur.com]

Also how to turn this

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Into this

[Linked Image from i.imgur.com]

All the parts used in this restoration came from eBay.