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My name is***** have been dealing in collectibles since 1979 and can help with this. Assuming that your ball is genuine this would sell for $300-500 at auction. A good venue is ebay. For top price it should be certified by JSA or PSA. As for the golf club, there is very little demand for left handed clubs. This would sell for $10-20. Putters are much more in demand.
It should but it's really a matter of demand. If someone needed a 7 iron to complete a set that matches your club, and the set was left handed, then you could probably get good money for this. But this is a challenge. If you listed this on eBay you may find that person.
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