There are some Safetran signals that will match by Norfolksouthern37, Justin Roth, and rrsignal. The JMR and rrsignals are interchangeable while the NS signals are not due to script differences so pick one and stick with them.
Being a 3H-gantry I will assume they are for interlockings and use a 3H advanced signal - these have name boards underneath heads for names and numbers, or an interlocking signal.