Old A. LECOULTRE Swiss Ladies Watch. Unknown Year 14K

Came across this Old A. LECOULTRE SWISS Ladies Watch. Trying to find the age of it. Tried researching all I can find is Jaeger Lecoultre, nothing with just A. Lecoultre stamped on the works.... I noticed on the works is written (A. Lecoultre) 15 JLS/2-ADJ. Also is the letters AF- RS. on the inside case the writing reads, A.Lecoultre Swiss 14K and a serial Number #201537. Their is also an image on the inside of the case, cant make out what it is. The band is Stripped cloth material with the clasp stamped 14K. Trying to figure out the age of this watch and also when did Antonie Lecoultre use his Stamped works in watches. Thanks in advance for any help.