The original Tamiya 56010 had all of those markings on the decal sheet (I'm assuming the base 1/48 is Tamiya too). I'll check if I have any leftovers, my initial was a Das Reich Tiger for a few years before I converted it. I have a few of those 1/48 around, Armorscale barrels, Voyager PE sets, etc. They make a nice model as is evident by your work.

If I don't have the decals, maybe the sheet is still available through the AAF museum under parts. If not, another member may have a set since I've seen quite a lot of Tamiya Tigers over the years, but not many DR schemes. This was my rendition on a shirt, it was my biggest seller years ago: