Which is the right cockade for this cap?

[MadZombieLenin]

Hello all-

I picked up this streetcar worker's cap a few months ago. I know the bottom cockade is incorrect, but I haven't had any luck at all finding the right one. I know I'm looking for a crossed hammer and wrench pin, but how can I avoid buying *another* pin meant for the collar or shoulder boards? They all look so similar.

For that matter, where do you all turn when looking for a specific cockade or other item? Being in the USA, I'm sort of limited to e, but as you know it's not always the best way to go. There must be a middle ground between sifting through the fakes on e and arguing over inflated prices at gun shows!

Just some thoughts. Thanks for your time!