Hi. I'm new to this board so if my query is not quite right let me know! I have a small vase, about 5" tall, made of iridescent blue glass with a silver overlay. The overlay is marked with a La Pierre mark and I'm trying to identify the glass maker. I've not been able to find a maker mark I can identify. The only mark is on the bottom, it is etched 1/23 and below that the number 6. There is a mark on the bottom where the vase was taken off the blowing pipe. The vase itself as I said is about 5" tall with a trilled very symmetrical folded/ ruffled top. Any insights in my little vase would greatly be appreciated.