How Available Are OBW Rolls?

1960-D are still very common in dealer stock. They were the most commonly kept roll in the early 60's roll craze. You can still buy sealed bags of them, both loose and in rolls from FRBs and distributing banks. The many varieties available mean that many of the rolls are likely searched, so pay attention to the rolls to ensure they are true OBW.

1970-S are far less common. They were not hoarded with the same fervor as 1960-D, and once the variety was recognized they have been searched. That said I've run across quite a few in my searches, which IMO is surprising given the value of the variety. I expect many of the "OBW" out there are actually rewrapped rolls that have been searched, so be very careful when purchasing.

I have the most success in purchasing BU and OBW rolls by going on road trips to cities with many dealers, and inquiring in person. Be sure to ask if they know of any other dealers who have rolls, as that's the best reference and minimizes wear on your shoes. Time your trip to coincide with local coin shows for another avenue for roll purchases, but note that most dealers won't take rolls to shows since they are low cost items that are heavy and thus get very little respect.

Rmp I searched ebay and there are supposed Obw rolls of 1970-s for varying prices( up to $75) I just can't imagine owning those rolls and NOT searching them. It looks like you have experience in this area, how much should I expect to pay for a bag of 1960-d?

Good assumption. I usually like to pay attention to the store's main focus.
If a store has numerous single variety/coin types for sale, I would automatically assume that anything supposedly "hidden" in their store has already been searched.
If a store has a variety of collectibles like antiques, stamps etc. with some coin rolls in the mix, there's a high probability they're legitimate.

Yup. Agreed.

Fact! You can get quite lucky at your LCS. My best rolls (cents) were bought very cheaply at one LCS near me and came from customers dumping old hoards/collections. Thankfully, at the time he had zero interest in them. For him they were taking up space so I could get them for a song.

Generally, attics are the worst place you can store coins due to huge temperature fluctuations. Temperature swings drive the corrosive process!

Getting warm is an issue, but the bigger issue is getting cold, then moving to a warm/humid place, causing condensation. I've opened quite a few OBW rolls and was terribly disappointed to find them "crusty" (as I call it) with condensation damage. Indeed there was a local dealer that operates out of an old bank, and the safety deposit boxes were filled to the brim with OBW rolls of all denominations going back to the early 30's. The collection was an OBW collector's dream! He sold the silver and nickel rolls over the years, but still had most of the Cents. I tried in vain for 20 years to get access to the Cent rolls, but the owner just wanted to hold onto them. Eventually he acquiesced, and started bringing out SDBs filled with rolls. I quickly saw that they were all crusty and corroded. I guess the vault was not heated, and over the years it had been opened to warm/humid air countless times, resulting in condensation even within the SDBs. It was heartbreaking.

Thanks everyone for the storage advice. I'll be recruiting some help to get to the attic and take a peak. The tubes are in plastic tubs, not sure if that will make a difference.