I have the opportunity to buy one of these (not this exaxt one) but something tells me they reproduced these. Did they? if so what is the real worth, i know the fake would have almost zero value

They were reproduced. I have sold the real deal. I will try to find a pic. Real one is dated 1917 with a stamp, dark blue porcelain, heavy/thick shelving. The repops are painted....
UPDATE..found the old auction number, 150726263013.
After looking at mine again, I would say yours is a repop, no screws on the front, no date. You look and decide.
UPDATE, the picture you show is an old eBay auction too. Someone paid for a real one, but got a fake.

i was using this picture as an example, the seller sent me a great picture but it is in a format that will not download tto this website

get a pic of the back too

the tin models are repro.
have 2 examples of the orig. porc therm..

Here is the pic of the sign in question.

heres a shot of mine. Its porcelain and real. I think his is tin.