Identify These Coins Please (Indian Coins)

Those are very interesting coins, particularly the one with the elephant and rider.
It's out of my expertise, but I hope you get some answers soon--there are many knowledgeable collectors here.

Thanks Mike,
What exactly is a teghpatam coin?

That's quite all right. All we ask in future is to post each coin in a separate thread. That way, the easily identified coins can be gotten out of the way, leaving only the tricky ones for the experts.

And I'm no expert on Indian and Islamic, but I do have a couple of general reference books. My observations:

#1: This very "square" script isn't common in India. I believe it's Sultanate of Delhi, a copper (or very, very debased silver) tanka dated AH 917 (= 1501/2 AD) of Sultan Sikander II Lodi. Listed in Album's Marsden (1977 edition) as Delhi #19, priced at $1, with the note "exceedingly common". This one on Zeno.ru is a similar match, only dated 919.

#2: It may also be a Delhi tanka of the same period, but the corrosion on this one makes it harder to read.

#3: The lower example has a very nice, clear date: "985", or 1575 AD. The "5" is distinctly "Indian" in shape, so it must be a coin of the Mughal conqueror, Muhammad Akbar. The upper coin is similar, but looks more like dated "989" - the last digit is partly off-flan. Copper coins of Akbar on zeno.ru.

#4: Ummm, pass. I'm not too proud to say, "I can't tell which way is up".

#5: These two are base-silver "bull and horseman" jitals, loosely modelled on the ones discussed in this thread here on CCF. Highly abstracted jitals like this were indeed struck in Delhi (as well as other places), but I'm nowhere near expert enough to accurately say for sure about the origins of yours.

#6: This one's more modern: Mysore (under British protection) 20 cash, 1840's: you can just see the remains of "184" in Western numerals below the lion, but the final digit in the date is off-flan. Listed in the Krause world coin catalogues as KM/C# 193.2. Fairly cheap (a couple of dollars in that condition), especially if the date isn't completely readable.

#7: Kushan Empire, indeed. King Huvishka, I believe, with the lady in the see-thru clothing on the reverse the moon goddess Mao. Zeno has some Kushan coins, but their example of this type is in worse state than yours. A better reference site for Kushan and other ancient and mediaeval central Asian empires (esp. Sassanian) is Grifterrec. The seventh one down on this page is your type, but again, the example pictures are less than optimal.

#8: Yep, another Kushan Empire coin, King Vima Takto, also known as Soter Megas.