The 1st series 2004-2009 dual headlight pre-ABS Rocket IIIs have two dial patterns (besides Kmh/ Mph country differences) but these speedos are all replaceable with aftermarket units from Dakota etc.
There is a brand new old stock one for sale with Hinckley Triumph on Oz eBay, a Qld aftermarket for Au$750 or best offer. The early dial pattern up to 2006 have not been available from Triumph for quite a while. It will not match your 2007 tacho dial but so what.
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The later dual headlight ABS versions require Triumph Factory digital speedos matching their ABS ECUs
. At least 2 Aussie versions since first ABS Roadster in 2010-2013, then a revised ECU speedo 2013-2016 then another minor ECU change but the 2nd ABS speedos still work with them too.
Be similar with pre and post ABS single headlight Rocket III Tourings tank mounted speedos, but they seem to only rarely fail.
Anyway I have some used R3Touring tank mounted and some New Old Stock dual headlight factory Triumph ABS speedos in the shed but will not fit your 2007 unless you take my spare 2016 ECU as well