Need help Locating Ballast

[fghray1]

I'm looking for a ballast for a older Dive Right MLS 10 watt hid.
I'm using the light head on a newer canister but the Ballast is bad. I checked Welsh Allyn but trying to figure which one it is is hard if they don't show a pic of it for me. I checked the Ballast for a part number but of course there is none. I emailed Dive Rite but as of yet they haven't responded. I even emailed Welsh Allyn but no response. I attached a pic in hopes someone may be able to help.