Clarification on correct lense for the MARCHAL 656 lamp

Hi,

I need avice on the correct Marchal lense set-up.

I have a set of 653 and one set of 656 lamp with both set having clear lense.

I have one extra NOS 656 lamp with amber lamp with Iode bulb. On this one the lense carries the word IODE on the upper right portion of the lense.

Is the other set of 656 I have correct. May be the lense were replaced? Do all the 656 should have IODE molded-in the lense.

Or was it possible to get 656's with the regular lense/bulb and also with the Iode lense/bulb.