Shep - There are 8 Browning Serpentines pictured on page B-54 and B-55 of "Broadheads 1871-1971 Identification and Rarity Guide, 2nd Edition". The 4 common models are pretty easy to find, but the 4 rarest models will go for a lot more than you stated.
Snufer - Likely you have the more common heads, but without seeing a photograph, it would be impossible to tell.