Yes, it is signed Coro and it is most likely from the 30's. This beauty measures about 2 1/2 x 1 1/2 and is in excellent condition - except that the stamen or pistils are missing - see image of inside of blossom. No scratches, no missing rhinestones, good safety clasp, no wear even on back. I believe that this could have been part of a Duette. See 9986 for similar but complete Coro Duette.
Manufacturer: Coro  

This is one of the beautiful old twisted wire pins made in China early in 20th century from something less than sterling. The leaves are real cut lapis and amethyst and the jewels on the urn are real too - jade most likely.
Measures 2 1/2 by 1 1/4 and has a safetly clasp. Chinese symbol under the MadeinChina is pressuably the artist. Excellent antique condition.
Manufacturer: China  

I have never seen a Coro Duette in these colors and it is definitely from the 30's. Frame for 2 clips is signed Coro Duette and Pat. No. 1798867 which puts the design in 1931. Quite amazing - no stones missing and only a couple tiny scratching on the lanvender
part of blooms with none on green. The stamens are not meant to be tremblers but one does move. I can't see what's going on from either front or back. Total measurements are 3 x 1 1/4 inches. Back views show hinged fur clips for separate use. Safety pinback is good.
Manufacturer: Coro  

Yes, it's signed and in great condition with prongset clear rhinestones that show no wear. The metal is rhodium, length 7 inches, box clasp (with jewel) and 3 1/2 inch safety chain.
Manufacturer: Weiss  

Oval pin with dried flowers under glass (or plastic) signed by Pierre Bex. 1 1/2 x 1 1/8 oval. Not marked sterling but acts like silver. Tube hinge, trombone catch, very good condition.
Made in France, between 1969 until the end of the 1980's. Old toolings used - which explains the old clasp. Mentioned with Lea Stein as very high quality - Paris.

Manufacturer: Pierre Bex  

Yep, Trifari made this fine old Clip Mate duet - Pat #2050804. It's in great condition - there is only one of the smallest rhinestones that doesn't sparkle. Setting is rodium, I think. Measures 2 3/8 x 1 1/8, very good condition.
Manufacturer: Triafari  

Actually, this neat bunch of perfectly surviving rhinestones is not marked, but it is sooo quality that someone with a catalogue collection could surely find it. If not, it is still ideal for the holidays. Necklace is 14 inches, perfect to rest at collarbone and bracelet is almost 7 inches. Like new, not a single aged stone, clip earrings, guard on bracelet, clasps bejeweled too, rhodium. In original gift box. Stunning!
Manufacturer: American  

This pin is a mystery to me. It doesn't look real old (safety clasp) and is in excellent condition but I have never seen the marks on the back: "Exquisite" and P.E.Co. Back looks like rhodium and the front has sturdy enamel is excellent condition.
Style reminds me of the great old 30's
flower pins but this is smaller - So, 40's? 2 inches by 1 1/2.
Manufacturer: P.E. Co. + Esquiste  

Matisse copper and enamel pin is a dramatic theater mask with copper twined around it. One half of mask is black enamel and the other is red enamel with gold flecks. Measures about 2 1/2 x 1 inch and has a sturdy safety clasp soldered to back. No chips, no scratches - so perfect I wonder if it was ever worn.
Manufacturer: Matisse  

These carved shell Cameos are the real thing - openback and held to light gives proof. Carving on each clip earring and large pin are different - amazing to find this quality in inexpensive costume jewelry. Gold finish and pearls are in excellent condition too. Safety clasp, hook on brooch to wear as necklace.

Manufacturer: Florenza  

Lovely Corocraft pin is still sparkling nicely, especially those wonderful red baguettes. Measures 2 3/4 x 1 1/2, with abstract "arms" that could be a flower. Rhodium with safety clasp. A few clear rhinestones have aged a bit but otherwise it is in excellent condition.
Manufacturer: Corocraft  

Can't find out who this artist is, sounds Italian, but she is classy. The handset prongset jewels are flawless and the antique setting makes me think 50's like they did with copper. Safety clasp.
3 x 1 3/4 inches.
Manufacturer: Nicola Tuoni - Italian?  

Coro Craft at its best! This stunning fur clip in a sweeping Art Deco design is an eyecatcher with its large oval openbacked red stones with channel set ones too. It's liberally splashed with clear rhinestones, some of which have lost just a bit of their luster. Gold finish has worn a bit only on the raised scrolled ribbons at the bottom. All rhinestones are there - couple of small ones have been replaced. 2 3/4 x 2 inches. Very good condition.
Manufacturer: CoroCraft  

Snap this Natty Creations (Pat.# 2065903) scarf clip, encrusted with red stones over your scarf and then use the back pin to hold it in place. Excellent condition. 3 inches with curve for scarf. Earrings, by good luck, match very well. Price is for set but could be separated.
Manufacturer: Natty Creations  

Here is half a pin by Coro. It is meant to hold a dangling heart? Bead? watch? Your choice. 1 x 1 inch, safety clasp, excellent condition.
Manufacturer: Coro