Frank,
I'm no expert on Howatt's, but I believe Howatt recurves were labelled "Damon Howatt" after Martin purchased the Howatt plant in 1976.
I'll try and give you a "timeline" on the emblems used on Howatt recurves.
Here's a link to the Damon Howatt story:
Damon Howatt story According to my feeble memory, the earliest Howatt recurves were labelled "Howatt's Eldorado"
Most of the early Howatts had "Spanish conquistador" type of names.
The next emblem had dropped the "Eldorado", but still retained the "Conquistador" emblem. I don't know if Howatt did that while he still owned the company or after he sold it in 1961:
The next emblem used was a "shield" and I know this was used prior to Martin's purchase in 1976:
The last and current emblem is the one that is most familiar - the "damon howatt" bow shield:
I hope this helps.