[Amps] Can you identify this Bird slug (marked 2500W, 1.5-20 MHz, 436-10)?

[wb0gaz at yahoo.com]

 In my bird slugs I have the above type. It is not equivalent to 2500H (don't recall the exact measurement difference, fits my 43 but it's not close reading-wise.)

Does anyone here recognize the nomenclature?

Thanks,

73 Dave WB0GAZ wb0gaz at yahoo.com