Anyone know anything about these Dime Banks?

[SDP73]

I picked these up in an estate sale purchase and I have been itching to crack one of them open to see what lies inside. I don't know much about them, but I know there are 50 silver dimes inside each one. I did some research on the bank but that doesn't really help much with assessing value, at least not to a newby like myself.

Do they have any extra value being intact, with silver dimes in them, or is it okay to crack one open and check the contents?

[liveandievarieties]

Those are fun, some were used as promotional items. I have one from a furniture allowing the down payment of a furniture set with the contents full in the roll. Fun, there's gotta be some market. I like mine and have never tried to sell or research them.

[LKLive13]

Nice grab, I would be too tempted to crack them open and search those dimes! Maybe you could take it to an antique store and see what they know about them?