It is my contention that the date of the contract takes precedent since a legal obligation is created to pay for the item when completed or delivered.
Using the contract date is a silly idea. Then cue dealers or whoever could just do a contract before the ban starts for 100 cues with ivory in them to be delivered 5 per year for the next 20 years as an example. You mentioned a deposit should also make a difference, but under what logic? Fine, I will put a one dollar deposit down on each of those 100 cues to be delivered over the next 20 years.
Prepaying in full shouldn't even allow the transactions to occur once it is illegal otherwise the rich guy will just prepay in full for the 100 ivory cues that are to be delivered over the course of the next 20 years which thereby effectively circumvents the law and its purpose. The only thing that should matter and the only thing that makes the law have the desired effect is whether or not the transaction is fully completed (meaning the item is paid for in full AND delivered to the buyer) prior to it becoming illegal.
Just some FYI........why they don't just tax the sale of legal ivory since there are tons and tons of it already here pre-dating the enactment of any ivory bans? Use the proceeds for wildlife preservation programs?
Part of what you are proposing does some harm, and part of what you are proposing does some good. On net though the harm far outweighs the good. If you allow a legal market, the harvesting of them illegally will continue at a great pace, causing far more loss of elephants than can be made up for with the tax dollars. This is an unfortunate reality, but a reality none the less. There unfortunately just is no solution other than a ban of all ivory sales worldwide, and it may even ultimately end up requiring a world wide ban on the private possession of the ivory too although that remains to be seen. A ban in the trade of ivory sucks, but is necessary, and sucks far less than the loss of the elephant on earth.
When you encounter folks who are so aberrant minded and immune to actual hard core facts, just move on because it is a futile discussion......All the ivory in my pool cues is legally here in the USA from "very very old" dead elephants that died a long, long time ago
You are right about the aberrant and close minded people who ignore facts, and because of that you fail to realize that you and the rest of the people on your side of the argument are the ones who are doing just that.
Your "but the elephants I'm using were killed way before the ban" argument completely ignores the fact that (as john coloccia already pointed out) as long as there is a legal market for ivory there will be an illegal one. And yes there will probably be an illegal market for ivory once the legal market end too, but it will be minuscule in comparison.
and IMO....there is no equivalent substitute for ivory which is why my cues use for ferrules and joints.
In the end this point doesn't really matter and is immaterial even if you are right. Who cares, as the survival of the elephant as a species is far more important than a few guys who get the perceived benefit of a slightly better hitting pool cue.
I happen to think your opinion is wrong though. There are man made materials that are superior, and if blind folded you couldn't tell the difference anyway (even though you will swear you could, but you would be swearing wrong). But again, even if you were right it doesn't matter as having elephants on the earth is far more important than you having a slightly better hitting pool cue.